State Board of Geological Survey of Michigan for the Year 1906

Total Page:16

File Type:pdf, Size:1020Kb

State Board of Geological Survey of Michigan for the Year 1906 REPORT In America ............................................................. 15 In Canada .............................................................. 15 OF THE In Michigan ............................................................ 15 STATE BOARD OF GEOLOGICAL SURVEY Methods of prospecting................................................17 OF MICHIGAN Prospecting tools ................................................... 17 FOR THE YEAR 1906 Final sampling ....................................................... 17 Importance of thoroughly proving a deposit .......... 18 ALFRED C. LANE Factors affecting commercial value of deposits ...........18 STATE GEOLOGIST Market and transportation...................................... 18 SEPTEMBER 10, 1907. Area and depth ...................................................... 18 Physical condition.................................................. 18 BY AUTHORITY Deep bogs with thin stratum of peat with water or LANSING, MICHIGAN marl below ............................................................. 19 WYNKOOP HALLENBECK CRAWFORD CO., STATE PRINTERS Sampling for other purposes than fuel .................. 19 1907 Chemical composition and ash ............................. 19 PEAT Possibilities of draining.......................................... 19 Character of the surface growth ............................ 19 ESSAYS ON ITS ORIGIN, USES AND Acidity .................................................................... 19 DISTRIBUTION IN MICHIGAN Sources of contamination producing high ash content.19 Importance of ash.................................................. 19 BY Flooding by streams .............................................. 19 CHARLES A. DAVIS Flooding by rain wash............................................ 19 Published by the State Board of Geological Survey, as a part Spring and terrace bogs ........................................ 20 of the report for 1906, and a contribution also to the Biological Shore wash in lakes .............................................. 20 Survey of the State, authorized by Act 250, Session 1905. Mineral matter from the water of lakes and PART III. ECONOMICS OF PEAT. streams.................................................................. 20 Dissolved Mineral Matter............................................20 BY CHARLES A. DAVIS. Precipitated by plants.............................................20 Relation of deposits of peat to the bottom. ..................21 Summary......................................................................21 Contents Color ...................................................................... 21 Weight.................................................................... 21 MISCELLANEOUS USES OF PEAT. .............................. 2 Texture................................................................... 22 Introductory.................................................................... 2 Relation of ash to commercial value ..................... 22 Uses in agriculture......................................................... 2 Location and extent of peat beds in Michigan..............22 Importance of muck soils in Michigan agriculture....2 Fuel value of peat.........................................................25 Difficulties in growing crops in muck or peat soils ...2 Compared with other fuels..................................... 26 Methods used in reclaiming swamp lands...............4 As affected by methods of preparation.................. 27 Peat as a fertilizer ....................................................4 As affected by cost of preparation......................... 30 Stable and barnyard litter on farms..........................5 Conclusions ........................................................... 30 Peat as a disinfectant for farm use ..........................6 MACHINERY FOR THE PREPARATION OP PEAT Peat as stock food ...................................................6 FUEL AND PEAT LITTER. .............................................31 Peat as a deodorizer and disinfectant in towns and The slayne or slane as used in different countries. .....31 cities............................................................................... 7 Machinery for making cut peat.....................................32 Destructive distillation of peat........................................ 7 Machines for compressing or condensing peat. ..........33 Peat coke and by-products ......................................8 Peat gas.................................................................11 Machines for drying and briquetting peat:....................36 Paper pulp, paper and cardboard................................ 12 Methods of coking peat. ...............................................39 Woven fabrics from peat.............................................. 13 Machinery for the preparation of peat litter. .................39 Packing material. ......................................................... 13 Devices for carrying peat from bogs to factory. ...........40 Roofing and sheathing paper. ..................................... 13 Peat factories and peat prospects in Michigan ............40 Non-conducting packing material. ............................... 13 Conclusion and acknowledgements. ...........................41 Paving and building blocks.......................................... 13 Peat as a source of electricity. .................................... 13 Peat dye....................................................................... 14 PEAT AS FUEL. ............................................................. 14 Historical development of the peat fuel industry in Europe ......................................................................... 14 Annual Report for 1906 / Davis on Peat - Part III – Page 1 of 42 List of Illustrations. has become possible, the muck soils have attracted more and more of the attention of progressive farmers, and from being considered nearly worthless, and entirely Plates. unproductive, they are now recognized as valuable and Plate XXIX. A peat bog, an old time slane, and an Ames highly productive types of soil for many crops, and it is slane.................................................................................2 as farm land, perhaps, that peat will yield the largest returns. In spite of this fact, however, there are still great Plate XXX. Peat fuel................................................................9 areas of such land in Michigan in a wild condition, which Plate XXXI. Leavitt peat machinary .......................................39 if they could be reclaimed, would add largely to the total wealth of the state, and to the individual resources of the Figures. owners. 1Towar, J. D., Loc. cit. Figure 18. Peat samplers. .....................................................17 Figure 19. Peat cutter after Brosowsky..................................32 Figure 20. Plans and section of peat factory inserted facing page ...............................................................................33 MISCELLANEOUS USES OF PEAT. Introductory: Peat is a substance of such common and abundant occurrence in the regions where it is found at all, and varies so much in texture and purity that it is not remarkable that it should be put to a variety of uses for which its composition, structure and other properties make it more or less perfectly fitted, especially in countries where other forms of raw materials are scarce and expensive, and where there is an abundance of various types of peat. Uses in Agriculture: Long before it was considered as a source of manufactured material, however, it was used as a soil upon which to grow crops, and in a number of other ways by the farmers, and methods of improving "swamp,” "marsh," "moor," "fen,” and "muck" lands have been important problems in agriculture from early times. Some geologists, and others, make a technical distinction between muck and peat, applying the name peat only to nearly pure deposits of vegetable matter, while the name muck is given to those which have a considerable admixture of mineral matter in the form of mud or other finely divided rock debris, but among the farmers of Michigan and adjoining regions no such distinction is made and all classes of soil, from pure peat, to that with much mineral matter mixed with it, are Plate XXIX. A peat bog, an old time slane, and an Ames called muck. slane. Importance of Muck Soils in Michigan Agriculture: Difficulties in Growing Crops in Muck Soils: It is Swamp lands, largely covered by peat and muck, are 1 apparent that there must be some reasons why swamp estimated according to Towar to form one seventh of lands are neglected to such an extent, and these the entire area of Michigan, and since they are quite appear, when it is learned that in many cases there are uniformly spread over the agricultural regions of the serious difficulties encountered in securing paying crops state, so that most farms of 100 acres or more have from soils of this type, after they have been made ready some part of their surface of this type of soil, it is for cultivation. apparent that they furnish a problem of some magnitude. The causes of these difficulties naturally group In the early days of farming in the state, these areas themselves under the following heads: were considered .worthless and were left in a wild and much neglected condition, as many still are, but as the (1) Those due to situation. higher and dryer lands have become less productive, (2) Those due to
Recommended publications
  • Petrographic and Vitrinite Reflectance Analyses of a Suite of High Volatile Bituminous Coal Samples from the United States and Venezuela
    Petrographic and vitrinite reflectance analyses of a suite of high volatile bituminous coal samples from the United States and Venezuela Open-File Report 2008-1230 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior Dirk A. Kempthorne, Secretary U.S. Geological Survey Mark D. Myers, Director U.S. Geological Survey, Reston, Virginia 2008 For product and ordering information: World Wide Web: http://www.usgs.gov/pubprod Telephone: 1-888-ASK-USGS For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment: World Wide Web: http://www.usgs.gov Telephone: 1-888-ASK-USGS Suggested citation: Hackley, P.C., Kolak, J.J., 2008, Petrographic and vitrinite reflectance analyses of a suite of high volatile bituminous coal samples from the United States and Venezuela: U.S. Geological Survey Open-File Report 2008-1230, 36 p., http://pubs.usgs.gov/of/2008/1230. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted material contained within this report. ii Contents Introduction ........................................................................................................................................................................1 Methods ..............................................................................................................................................................................1
    [Show full text]
  • Coal Characteristics
    CCTR Indiana Center for Coal Technology Research COAL CHARACTERISTICS CCTR Basic Facts File # 8 Brian H. Bowen, Marty W. Irwin The Energy Center at Discovery Park Purdue University CCTR, Potter Center, 500 Central Drive West Lafayette, IN 47907-2022 http://www.purdue.edu/dp/energy/CCTR/ Email: [email protected] October 2008 1 Indiana Center for Coal Technology Research CCTR COAL FORMATION As geological processes apply pressure to peat over time, it is transformed successively into different types of coal Source: Kentucky Geological Survey http://images.google.com/imgres?imgurl=http://www.uky.edu/KGS/coal/images/peatcoal.gif&imgrefurl=http://www.uky.edu/KGS/coal/coalform.htm&h=354&w=579&sz= 20&hl=en&start=5&um=1&tbnid=NavOy9_5HD07pM:&tbnh=82&tbnw=134&prev=/images%3Fq%3Dcoal%2Bphotos%26svnum%3D10%26um%3D1%26hl%3Den%26sa%3DX 2 Indiana Center for Coal Technology Research CCTR COAL ANALYSIS Elemental analysis of coal gives empirical formulas such as: C137H97O9NS for Bituminous Coal C240H90O4NS for high-grade Anthracite Coal is divided into 4 ranks: (1) Anthracite (2) Bituminous (3) Sub-bituminous (4) Lignite Source: http://cc.msnscache.com/cache.aspx?q=4929705428518&lang=en-US&mkt=en-US&FORM=CVRE8 3 Indiana Center for Coal Technology Research CCTR BITUMINOUS COAL Bituminous Coal: Great pressure results in the creation of bituminous, or “soft” coal. This is the type most commonly used for electric power generation in the U.S. It has a higher heating value than either lignite or sub-bituminous, but less than that of anthracite. Bituminous coal
    [Show full text]
  • Lecture 32: Coke Production
    NPTEL – Chemical – Chemical Technology II Lecture 32: Coke production 32.1 Introduction Coal is used as fuel for electric power generation, industrial heating and steam generation, domestic heating, rail roads and for coal processing. Coal composition is denoted by rank. Rank increases with the carbon content and decreases with increasing oxygen content. Many of the products made by hydrogenation, oxidation, hydrolysis or fluorination are important for industrial use. Stable, low cost, petroleum and natural gas supplies has arose interest in some of the coal products as upgraded fuels to reduce air pollution as well as to take advantage of greater ease of handling of the liquid or gaseous material and to utilize existing facilities such as pipelines and furnaces. 32.2 Coking of coal Raw material is Bituminous coal. It appears to have specific internal surfaces in the range of 30 to 100m2/g. Generally one ton of bituminous coal produces 1400 lb of coke. 10 gallons of tar. Chemical reaction:- 4(C3H4)n nC6H6 + 5nC + 3nH2 + nCH4 Coal Benzene Coke Lighter hydrocarbon Joint initiative of IITs and IISc – Funded by MHRD Page 1 of 9 NPTEL – Chemical – Chemical Technology II Process flow sheet: Illustrated in Figure. Figure 32.1 Flow sheet of coking of coal 32.3 Functional role of each unit (Figure 32.1): (a) Coal crusher and screening: At first Bituminous coal is crushed and screened to a certain size. Preheating of coal (at 150-250˚C) is done to reduce coking time without loss of coal quality. Briquetting increases strength of coke produced and to make non - coking or poorly coking coals to be used as metallurgical coke.
    [Show full text]
  • THE GUIDE to SOLID FUELS This Leaflet Will Tell You All You Need To
    THE GUIDE TO SOLID FUELS This leaflet will tell you all you need to know about: • The different solid fuels available and their suitability for the various types of appliances • Smoke control legislation • Buying solid fuel • Hints on getting the best from your fuel and appliance Choice of Fuel There are a great many different solid fuels for sale. Your choice will be based on a number of criteria, the most important of which will be the type of appliance you will be burning the fuel on and whether or not you live in a smoke control area (see page 4). Fuels for open fires Housecoal The most traditional fuel for open fires is housecoal. It is available in various sizes e.g. Large Cobbles, Cobbles, Trebles and Doubles. The larger sizes are usually a little more expensive than Doubles size. Housecoal comes from mines in Britain and other parts of the world, most notably Columbia and Indonesia. The coal may be sold by the name of the colliery it comes from e.g. Daw Mill, the port of entry e.g. Merseyport or a merchant’s own brand name, e.g. Stirling. Coal merchants also frequently sell the coal by grade – 1, 2 and 3 or A, B and C; 1 and A being the best quality. Wood Wood and logs can be burnt on open fires. They should be well-seasoned and preferably have a low resin content. You should not use any wood that has any kind of coating on the surface e.g. varnish or paint, as harmful gases may be emitted on burning.
    [Show full text]
  • Fuel Which May Not Be Burned in the Low Smoke Zone
    Cork Low Smoke Fuel Zone Fuel which may not be burned in the low smoke zone Bituminous (Smoky) coal Often labelled “Polish”, “Columbian”, “Texan”, “Russian” or “House” coal. This is sometimes labelled “Premium” coal, but many low smoke brands also carry the “Premium” tag. If it doesn’t say “Low smoke” on the bag, don’t burn it in the low smoke zone. “Singles”, “Doubles” and “slack” are usually bituminous, and may not be burned, except for low smoke singles. Bituminous coal when burned emits many toxic substances, which have been linked to heart attack, stroke, cancer, asthma and many other heart and lung ailments. Timber effect sheeting or treated timber Scrap Chipboard (particle board), plywood, Oriented Strand Board (OSB), Medium Density Fibreboard (MDF), or any other material that has been made using glues, resins, etc. Chipboard (particle board) Plywood In addition to being harmful to the environment, these can release harmful substances into your home when burned. You should not burn broken furniture, or any other timber which has been treated with preservative, paint, varnish, lacquer or polish. These may not be burned in any domestic fire, Oriented Strand Board Medium Density Fibre in or outside the low smoke zone. (OSB) Board (MDF) Household waste Plastics, Tetra-paks, Styrofoam cartons and wrappers, polythene, etc. Burning of household waste has a detrimental effect on the environment inside and outside the home. It releases carcinogenic substances called dioxins. These may not be burned in any domestic fire, inside or outside the low smoke zone. Types of fuel which may be burned in the low smoke zone Anthracite A naturally low smoke, hard, shiny coal.
    [Show full text]
  • High Quality Graphite Electrode Products
    HIGH QUALITY GRAPHITE ELECTRODE PRODUCTS GrafTech International is a leading manufacturer of high quality graphite electrode products essential to the production of Electric Arc Furnace (or EAF) steel and other ferrous and non-ferrous metals. We have a broad portfolio of competitive graphite electrode manufacturing facilities, including three of the highest capacity facilities in the world. We are the only large scale graphite electrode producer that is substantially vertically integrated into petroleum needle coke, a key raw material for graphite electrode manufacturing. This unique position provides competitive advantages in product quality and cost. MAXIMIZING STEEL PRODUCTIVITY THROUGH TECHNOLOGY AND SERVICE LEADERSHIP Founded in 1886, we have over 130 years of experience in the research and development (or R&D) of graphite and carbon based solutions, and our intellectual property portfolio is extensive. We currently have graphite electrode manufacturing facilities in Calais, France, Pamplona, Spain, Monterrey, Mexico and St. Marys, Pennsylvania. Our customers include major steel producers and other ferrous and non ferrous metal producers in Europe, the Middle East and Africa (or EMEA), the Americas and Asia Pacific (or APAC), which sell their products into the automotive, construction, appliance, machinery, equipment and transportation industries. Our vision is to provide highly engineered graphite electrode services, solutions and products to EAF operators. Based on the high quality of our graphite electrodes, reliability of our petroleum needle coke supply and our excellent customer service, we believe that we are viewed as a preferred supplier by the global EAF steel producer market. GRAFTECH SERVICE AND SOLUTIONS We consider sustained customer satisfaction as a key measure of product and service performance.
    [Show full text]
  • Anthracite Anthracite – an Overview
    ANTHRACITE ANTHRACITE – AN OVERVIEW Anthracite is a high-rank coal, representing a coal that has been subjected to the highest grade of metamorphism. Anthracite is shiny black, hard and brittle and has the highest fixed-carbon content. Due to its low volatile matter, anthracite's combustion process is slow. Most anthracites have low-moisture content and their heating value is up to 8,200 kcal/kg. Anthracite combusts with hot, clean flame, containing low content of sulfur and volatiles. Due to these characteristics, anthracite is often used in specialized industrial uses that require smokeless fuels. 2 CLASSIFICATION OF COAL 3 ANTHRACITE – AN OVERVIEW Anthracite has a history of use A small amount of impurities in blast furnaces for iron smelting; and a high percentage of carbon however, it lacks the pore space of makes anthracite coal the most metallurgical coke, which advantageous for combustion, as eventually replaced anthracite. it gives the maximum amount of Nonetheless, anthracite is a unique energy. high-tech raw material characterized by the maximum carbon content. In various grades In its calorific value, UHQ of coal, this parameter can range anthracite surpasses all other from 50 pct in brown coal (lignite), grades of coal – 8,200 kcal/kg to 95 pct of ultra high quality compared to 7,000 kcal/kg of anthracite coal (UHQ). The higher natural gas. Coal Anthracite is the the carbon content in coal, the hardest of all coals and practically smaller the volume of various does not sinter. impurities, such as nitrogen, hydrogen, ash, and so on. 4 USES OF UHQ ANTHRACITE Anthracites can be used in various spheres of human activity, like industrial production (metal smelting, power generation, chemical – filtering sugar to make it white and as catalyst support, soda ash, and pharmaceutical industry as a material absorbents in the production of medicines, etc.).
    [Show full text]
  • Heats of Combustion of Anthracite Cokes and of Artificial and Natural Graphites 1
    1 U. S. DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS RESEARCH PAPER RP1139 Part of Journal of Research of the National Bureau of Standards, Volume 21 : October 1938 HEATS OF COMBUSTION OF ANTHRACITE COKES AND OF ARTIFICIAL AND NATURAL GRAPHITES 1 By Phillip H. Dewey 2 and D. Roberts Harper, 3d 3 ABSTRACT There have been determined the heats of combustion of 30 samples of anthracite coke of known different temperatures of preparation (900° to 1,300° C) , hydrogen contents (0.08 to 0.78 percent), and adsorptive capacities (0.13 t o 37.5 cma of gaseous CO2 pel' gram of solid carbon), in order to study the effect of these proper­ ties on the energy content of the material. Data were also obtained on the heats of combustion of two samples of pure ash-free artifi cial graphite and four different samples of natural graphite. The heats evolved, expressed in international kilojoul es, for the combustion of 1 mole of solid carbon to form CO2, at 25.0° C and a pressure of 1 atmosphere, without the production of external work, are as follows : Art ificial graphit.e No. 0, 393.39 ± 0.17; artificial graphite No. I, 393.25 ± 0.15; Ticonderoga natural graphite, 393.32 ± 0.1l; Buckingham nat ural graphite, 393.35 ±0.13; Baffin Island natural graphite, 393.37 ± 0.26; and hydrogen-free anthracite coke, 403.03 ±0.29 (obtained by linear extrapolation to zero hydrogen content of the data on the hydrogen-containing cokes). CONTENTS Page I. Introduction __ _________ ____ ______ ____ ______ __________________ _ 457 II.
    [Show full text]
  • Market Demand Study: Australian Metallurgical Coal
    Commodity Insights Final Report Market Demand Study: Australian Metallurgical Coal Report to the Minerals Council of Australia 12th October, 2018 Commodity Insights Disclaimer This report was commissioned by the Minerals Council of Australia on a fee-for-service basis according to Commodity Insight’s schedule of rates. Commodity Insight’s fee is not contingent on the outcome of this report. None of Commodity Insight’s partners, directors, substantial shareholders and their associates have (or had) a pecuniary or beneficial interest in/or association with any of the Minerals Council of Australia’s management or their directors, substantial shareholders, subsidiaries, advisors and their associates prior to or during the preparation of this report. In preparing this report, Commodity Insights relied, in whole or in part, on data and information provided by third parties, which information has not been independently verified by Commodity Insights and which Commodity Insights has assumed to be accurate, complete, reliable, and current. Therefore, although Commodity Insights has utilised its best efforts in preparing this Report, Commodity Insights does not warrant or guarantee the conclusions set forth in this Report which are dependent or based upon data, information, or statements supplied by third parties. This Report is intended for the Customer’s sole and exclusive use and is not for the benefit of any third party and may not be distributed to, disclosed in any form to, used by, or relied upon by, any third party without prior written consent of Commodity Insights, which consent may be withheld in its sole discretion. This report may contain or refer to forward-looking information based on current expectations, including, but not limited to coal prices.
    [Show full text]
  • Investigation of the Stress Induced Properties of Coke During Carbonization
    Graduate Theses, Dissertations, and Problem Reports 2007 Investigation of the stress induced properties of coke during carbonization James Joshua Maybury West Virginia University Follow this and additional works at: https://researchrepository.wvu.edu/etd Recommended Citation Maybury, James Joshua, "Investigation of the stress induced properties of coke during carbonization" (2007). Graduate Theses, Dissertations, and Problem Reports. 1959. https://researchrepository.wvu.edu/etd/1959 This Thesis is protected by copyright and/or related rights. It has been brought to you by the The Research Repository @ WVU with permission from the rights-holder(s). You are free to use this Thesis in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you must obtain permission from the rights-holder(s) directly, unless additional rights are indicated by a Creative Commons license in the record and/ or on the work itself. This Thesis has been accepted for inclusion in WVU Graduate Theses, Dissertations, and Problem Reports collection by an authorized administrator of The Research Repository @ WVU. For more information, please contact [email protected]. Investigation of the Stress Induced Properties of Coke during Carbonization James Joshua Maybury Thesis submitted to the College of Engineering and Mineral Resources at West Virginia University Master of Science in Mechanical Engineering W. Scott Wayne, Ph.D., Chair Thomas R. Long, Ph.D. Peter G. Stansberry, Ph.D. Alfred H. Stiller, Ph.D. Department of Mechanical and Aerospace Engineering Morgantown, West Virginia 2007 Keywords: Coke, Texture, Anisotropic, Coking, Needle Coke, Pitch Coke, Metallurgical Coke Abstract Investigation of the Stress Induced Properties of Coke during Carbonization James J.
    [Show full text]
  • Thermogravimetric Study of Coal and Petroleum Coke for Co-Gasification
    Korean J. Chem. Eng., 24(3), 512-517 (2007) SHORT COMMUNICATION Thermogravimetric study of coal and petroleum coke for co-gasification Sang Jun Yoon, Young-Chan Choi, See-Hoon Lee and Jae-Goo Lee† Department of Energy Conversion, Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Korea (Received 28 August 2006 • accepted 11 November 2006) Abstract−As a preliminary study of gasification of coal and petroleum coke mixtures, thermogravimetric analyses were performed at various temperatures (1,100, 1,200, 1,300, and 1,400 oC) and the isothermal kinetics were analyzed and compared. The activation energies of coal, petroleum coke and coal/petroleum coke mixture were calculated by using both a shrinking core model and a modified volumetric model. The results showed that the activation energies for the anthracite and petroleum coke used in this study were 9.56 and 11.92 kcal/mol and reaction times were 15.8 and 27.0 min. In the case of mixed fuel, however, the activation energy (6.97 kcal/mol) and reaction time (17.0 min) were lower than the average value of the individual fuels, confirming that a synergistic effect was observed in the co- processing of coal and petroleum coke. Key words: Coal, Petroleum Coke, TGA, Gasification INTRODUCTION catalyst. Therefore, a gasification process not emitting SOx and NOx and yet capable of generating power and producing new chemical Gasification refers to a series of processes that produce synthesis materials is the best process for utilizing petroleum coke [4,5]. gas, i.e., H2 and CO from all substances containing carbon, such as In recent years, various attempts have been made to produce syn- coal, petroleum coke, heavy residual oil, wastes and biomass [1-3].
    [Show full text]
  • Coke Oven Emissions from 1979-1983
    Report on Carcinogens, Fourteenth Edition For Table of Contents, see home page: http://ntp.niehs.nih.gov/go/roc Coke-Oven Emissions to 35% of the initial coal charge is emitted as gases and vapors, most of which are collected in by-product coke production. Coke-oven gas CAS No.: none assigned includes hydrogen, methane, ethane, carbon monoxide, carbon diox- Known to be human carcinogens ide, ethylene, propylene, butylene, acetylene, hydrogen sulfide, am- monia, oxygen, and nitrogen. Coke-oven gas tar includes pyridine, First listed in the Second Annual Report on Carcinogens (1981) tar acids, naphthalene, creosote oil, and coal-tar pitch. Benzene, xy- Carcinogenicity lene, toluene, and solvent naphthas may be extracted from the light- oil fraction (IARC 1984). Coke-oven emissions are known to be human carcinogens based on Use sufficient evidence of carcinogenicity from studies in humans. The primary use of coke is as a fuel reductant and support for other Cancer Studies in Humans raw materials in iron-making blast furnaces. Coke is also used to Before 1950, numerous case reports linked employment in coke pro- synthesize calcium carbide and to manufacture graphite and elec- duction with cancer of the skin, urinary bladder, and respiratory tract. trodes, and coke-oven gas is used as a fuel. By-products of coke pro- Since then, several cohort studies conducted in the United States, the duction may be refined into commodity chemicals (such as benzene, United Kingdom, Japan, and Sweden have reported an increased risk toluene, naphthalene, sulfur, and ammonium sulfate) (IARC 1984, of lung cancer in humans exposed to coke-oven emissions.
    [Show full text]