Prefeasibility Report of M/S Srinivasa Mining
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Prefeasibility Report Of M/s Srinivasa Mining Company Ltd. Sy. No. 1891, Chennur village, Gudur mandal, Nellore district Andhra Pradesh Minerals to be mined: Mica, Quartz and Feldspar Area: 67.40 Ha. Prepared By: M/s Pragathi Labs and Consultants Pvt. Ltd. (Recognized by Ministry of Environment and Forest, Govt. of India) Plot No. B15 & 16, Industrial Estate Sanath Nagar, Hyderabad – 500 018 M/s. Srinivasa Mining Company Ltd. Pre-Feasibility Report 1.0 Executive Summary M/s Srinivasa Mining Company Ltd. proposes to conduct Semi-mechanized open-cast method quarrying of Mica, Quartz and Feldspar extraction in an area of 67.40 ha. in Sy. No. 1891, Chennur village, Gudur mandal, Nellore district, Andhra Pradesh. The mining lease was issued by Department of mines and geology through the Deputy Director of Mines and Geology, Guntur dated 23.07.2016 for the period of 20 years. The mining area which is marked on the Survey of India Topo sheet No. 57N/16 is located in Nellore district of Andhra Pradesh. The mine is well connected with roads passing through Chennur village. The Mica ore is mainly used for insulation and coating for welding rods, Quartz is used in Steel industry, Glass industry and Electronic appliances. Feldspar is used by Ceramic industries. Thus the extracted ores will be supplied to the respective industries. Table No. 1 Details of the Mine Lease area Description Details Project Name M/s Srinivasa Mining Company Ltd. Total reserves (T) 309278 Production Mica – 1235 TPA Quartz – 3088 TPA Feldspar – 37066 TPA Lease Area (hectares) 67.40 State Andhra Pradesh District Nellore Mandal Gudur Village Chennur Survey No. Sy. No. 1891 Present status Lease for 20 year, Mining Plan Approved. Applicant address M/s Srinivasa Mining Company Ltd, Plot No. 195, Sriramnagar colony, Champapet, Hyderabad – 500 079 M/s Pragathi Labs & Consultants Pvt. Ltd. Page No. 1 M/s. Srinivasa Mining Company Ltd. Pre-Feasibility Report 2.0 Brief Description of Nature of the Project The proposed mining lease area 67.40 Ha of M/s Srinivasa Mining Company Ltd. is located in the Nellore District of Andhra Pradesh. It has been proposed to excavate approximately 1235 tonnes of Mica, 3088 tonnes of Quartz and 37066 tonnes of Feldspar from the proposed mine area. The entire lease area is undulating elevated with very gentle slope towards north- east. The topographic plan has been prepared with 1m contour interval, its highest elevation is 30m RL. The proponent has proposed to produce the Feldspar and Quartz by using drilling and blasting for progressing benches and for handling of ore/ waste material. 3.0 Need for the Project and Its Importance to the Country or Region The products from the mining as proposed are the backbone of all commercial products which is used in daily life by humans. Raw material for various commercial products is made available only from such mining. The Mica ore to be excavated is in high demand at the local market for insulation and coating for welding rods. Quartz will be supplied to steel industries, glass industries and electronic appliances companies. Feldspar will be supplied to Ceramic industries. This project will also provide employment to local people from the nearby villages by helping them earn livelihood. In addition to this, due to proposed production, the government will also be benefited financially through revenues amounting to lakhs of rupees by way of royalty, sales taxes, road tax etc. 4.0 Location of Project The mining lease area is located at Sy. No: 1891, Chennur village, Gudur mandal, Nellore district, Andhra Pradesh. The project falls in SOI Toposheet No. - 57 N/12 & N/16 and falls on Latitude 14º 07'57" N and Longitude 79º 47' 45" E. The nearest village is Chennur located at a distance of 1.6 km from the QL area in North direction. The quarry lease area is accessible through a good motorable asphalted road from Chennur which is further connected to Venkatagiri – Gudur road leading to NH-5 in East direction. The nearest Railway Station is at Gudur which is at a distance of 5.4 km in North East direction from the mine. Location map and Key plan of the Project site is presented in Fig. No. 1 & 2 respectively. M/s Pragathi Labs & Consultants Pvt. Ltd. Page No. 2 M/s. Srinivasa Mining Company Ltd. Pre-Feasibility Report Fig. 1 –Location of Proposed Mine M/s Pragathi Labs & Consultants Pvt. Ltd. Page No. 3 M/s. Srinivasa Mining Company Ltd. Pre-Feasibility Report Fig. No. 2 Key Plan of the proposed mine M/s Pragathi Labs & Consultants Pvt. Ltd. Page No. 4 M/s. Srinivasa Mining Company Ltd. Pre-Feasibility Report 5.0 Method of Mining It is proposed to operate the mine by semi mechanized method of open cast mining with systematic & scientific methods adopted. Bench height of 3m and width shall be maintained more than 3m as per the statutory requirements and slope of benches will be maintained at 60o. During the proposed period the work will start from north and advance towards southern direction. The quartz and feldspar is proposed to produce by using drilling and blasting for progressing benches and for handling ore/waste material. However drilling and blasting will be used for hard formations only. The ore body is blasted and loaded y excavator in to tippers of 10 ton capacity and transported to the end users and dump yards. As the formation is semi hard in nature, the mining will be carried out with jackhammer drilling, blasting, excavator etc. The drilling and blasting will be used for breaking the material. The drilling will be done to a depth of 3m with the follow up of different length of rods as 0.9 m, 1.2 m, 1.8 m, 2.4 m, 3.0 m as the length of the rod is shorter the diameter of the bit will be more so that the follow up of drilling will be easy to drill and the loading will be done by excavator. The ores will be transported directly to the consumers. Ground water is found 30 m below ground level in the surrounding areas and the mining activities will be carried out at the maximum depth of 22 m so, no ground water is likely to be encountered throughout the life of mine. Table No. 2 Production Details Year Production Mica @ 2 Quartz @ 5 Feldspar @ 60 Sub grade material @ (Tons) % in tons % in tons % in tons 33% in tons I 61313 1226 3065 36787 20233 II 61625 1232 3081 36975 20336 III 61500 1230 3075 36900 20295 IV 62463 1249 3123 37477 20612 V 61990 1239 3099 37194 20456 Total 308891 6176 15443 185333 101932 5.1 Drilling Drilling will be carried out as per established criteria decided by proponent. The details of drilling is given below Depth of hole 3.0 m Spacing 1.0 m Burden 1.0 m Bench height 3.0 m Bulk density 2.5 T/m2 Each hole 7.5 T Yearly production = 61500 MT/ 300 (Working days) = 205 T/day Daily production per day = 205 T The requirement of holes per day = 205 T(per day) / 7.5 T (per hole) = 27 holes/day M/s Pragathi Labs & Consultants Pvt. Ltd. Page No. 5 M/s. Srinivasa Mining Company Ltd. Pre-Feasibility Report 5.2 Blasting The blast design may have the average burden and spacing of 1.0 m and 1.0 m respectively. The charge per hole shall be about0.375 kg slurry explosive. At a time 27 holes shall be blasted and the maximum charge per day shall be about 10 kg. However, the blast design would be optimized for minimum vibration, noise and reject. Slurry explosives with delay detonators will be used for blasting. 5.3 Water Requirement The total water requirement will be 21.3 KLD. Out of this 17 KLD will be used for Dust suppression on haul roads and 1.3 KLD for proposed green belt and rest of the quantity will be required for domestic purpose. This water will be sourced from the nearby villages through tankers. 5.4 Power Requirement All the activities will be carried out in a semi-mechanized manner. The material will be excavated and loaded directly into, dumpers, tractors-trolley etc. by the diesel run excavator cum loaders. The operation will be done only from sun rise to sun set. So the power requirement for the mining activity is limited. The power supply for the required mining activities will be sourced from the nearby village (Chennur) and apart from this 125 kVA DG set will be used in case of any emergency. 6.0 General geology The main geological formation in this belt is of Archean age. The major rock types of the Nellore schist belt are strati graphically grouped as Alluvium, Cuddalore sand stone, Rajmahal plant beds, Granite (associated veins and lenses of Pegmatite and Quartz), Granite (inclusion of basic rocks, Quartz, Schist, Gneisses etc.). In the proposed mine area the pegmatite are very common. Feldspar and Quartz can be seen in pit. The feldspar contains symptoms of Mica also. 6.1 Geological Reserves The estimation of ore reserves is made by using the cross sectional method. The geological cross sections are prepared at an interval of 30 m, across the strike of the ore body. The area of individual litho units in each cross section is measured and multiplying sectional interval and tonnage is arrived by multiplying with its bulk density. The bulk density is considered as 2.5t/m3. Recovery is taken as 60% for Feldspar and 5% for Quartz and 2% for Mica remaining 33% for sub grade mineral.