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Underwater Speleology

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Underwater Speleology ... _.__ ._._ ........ _- ..... _---------------. UNDERWATER SPELEOLOGY OFFICIAL NEWSLmER OF THE CAVE DIVING SECTION OF THE NATIONAL SPELEOLOGICAL SOCIETY VOLUME 8 NUMBER 1 Underwater Speleology, vol.8, N9.1 UNDERWATER SPELEOLOGY ON THE COVER ............... Published Bimonthly Beginning in February Sheck Exley (NSS 13146) begins an extensive by exploration of one of the many clear first The Cave Diving Section of magnitude springs in Florida. These springs The National Speleological Society include nine of the ten longest caves in Florida. Photo by John Zumrick (NSS 187B8). c/o Stephen Maegeriein, P. O. Box 60 Williams, Indiana 47470 CALENDAR Deadline for publication is the second Friday of the preceeding month. Send exchange publications and editorial correspondence to the editor: July 12-18 5th International Cave Diving John Zumrick Camp. Contact Sheck Exley, 10259 120 Rusty Gans Dr. Panama City Beach, Florida 32407 Crystal Sprgs Rd., Jacksonvil Ie, Florida 32221 Section membership, including a subscription to un· derwater speleology is open to all members in good stan· July 18-24 8th International Congress of ding of the National Speleological Society at $3.00 per Speleology, Bowling Green, Ky. year. Subscription to non-members is $5.00 per year. Make checks payabie to the NSS Cave Diving Section in For information write Eighth care of the Treasurer. Opinions expresSed in Underwater International Congress of Speleology are not necessarily those of the section or the Speleology, Secretariat, Dept of NSS. Geography and Geology, Western Kentucky Unlv., Bowling Green, Kentucky 42101. EXECUTIVE COMMITTEE ***************RENEWAL TIME?****************** CHAIRPERSON VICE-CHAI RPERSON Dennis Williams (N55 182&11 Karen E. Wark (N5520537) AI I CDS members, who received Volume 7 of Box 491 4756 Birdsong Uine Apt. 203 Underwater 5peleology, have been mai led this Opa Locka, FI. 33054 Virginia Beach, Va. 23455 first issue of Volume 8. The Editor wants to get the newsletter back on schedule. There SECRETARY TREASURER Mary Ellen Eckhoff (N55 197041 Stephen D. Maegerlen (N5583401 would have been more delay in starting Volume 8, Route 1, Box 502 P.O. Box 60 if we had waited unti I membership renewals had Live Oak, FI. 32670 Williams, In. 47470 arrived. TRAINING DIRECTOR EDITOR Forrest M. Wilson (N55 166311 john L. Zumrick, jr. (N55 16788) $0 look at your mai I ing label, if there is a 07-6 2832 Concord Dr. 120 Rusty Gans Dr. above your name, you wil I not receive any more of Decatur, Ga. 30033 Panama City Beach. FI. 32407 newsletters unless you renew! COMMITTEES PUBLICATIONS SAFETY Sheck Exley (N55 131461 Thomas H. Cook (N55 15548) 10259 Crystal Springs Rd. 376 Webster 5t. EDITORIAL Jacksonville, FI. 32221 Manchester, NH. 03104 by John zumrick (NSS 18788) SLIDE PROGRAM ACCIDENTS Grady W. Marshall !N55 20373) Mary Ellen Eckhoff (N55 19104) 2623 Tulip Tree. Circle Route 1, Box 502 1980 was a successful year for the Cave Seffner, FI. 33564 Live Oak, FI. 32670 Diving Section. During this past year we be­ came the largest organization of cave divers WORKSHOP VISITORS in the world. Much of . the credit for this Henry Nicholson (N5521028) Roy Bailey (N55 196~) SUCcess must stand with our officers and com­ 4517 Park St. 1570 Lane Ave., Apt. # 410 Jacksonville, FI 32205 Jacksonville, FI. 32210 mittee members. I We sure owe them a big thanks. I for one remember the friendly INTERNATIONAL RESCUE charm and firm determination with which India Sheck Exley (N55 13146' Jeffrey Parker (NSS 2019l) Young fulfilled her role as chairperson. 10259 Crystal Springs Rd. Henry Stelling !N55 206451 jacksonville, FI. 32221 402 E. Carolina Certalnly, the quiet efficiency with which Tallahassee, FI. 32301 Bill Fehring, the outgoing secretary, got the 2 .... - .-------------------------__________..J .._._._--_ .. _._ .... _--_._---_ .. _... __ ._-----------, Underwater Speleology Vol.8,No.1 election ballots and notices to you, general­ hardly needs an introduction. Aided by his lyon short notice, should not go unrecogniz­ trusty microcomputer, he is our ever effi­ ed. Gene Melton spent countless hours edit­ cient treasurer and newsletter publisher. ing our newsletter over the past two years as Forrest Wilson has been training director well as designing and producing the section's since the section first began instruction in Tee shirts. To all you and to Greg McCarty cave and cavern diving. Under his.guidance our outgoing vice-chairperson, thank you. this porgram has become the largest of it type in the 0.5. Finally, there's the The newly elected executive committee for editor. Well, my efforts shall be only to 1981 includes: Dennis Williams, chairperson, plain for you to evaluate. Karen Wark, vice-chairperson; Mary Ellen Eckhoff, secretary; Steven Maegerlein, treas­ This issue begins volume 8 of Underwater urer) Forrest Wilson, training director; and Speleology. In this volume I shall endevor myself as editor. I feel confident that, to continue in the tradition of past editors. with the poSSible exception of the editor, Incidents and Cave Diving Notes and to beg in this group will quide the section along its a new column, The Instructors Corner. By or­ currently successful path. ganizing these columns as well as our regular articles into a two column fdrmat and reduc­ The new chairperson, Dennis Williams, has ing the print size. I hope to provide twice concerned himself primarily with the study of the information on cave diving per issue at Lucayan Caverns and the various offshore blue little if any increase in publishing costs. holes of Grand Bahama Island where he lives. Many have enjoyed his magnificent slides of However, if I am to succeed in this ef­ these caves at workshops here in Florida as fort, I need your help. My exploits alone well as at several past NSS conventions. cannot fill these pages with sufficiently Though not a stranger to Florida, Karen Wark varied news to keep you interested. I must is better known for her investigations in depend on you, the membership, for that. various Virginia sumps including that in Should you want to write a full length arti­ Butler Cave. Those who know her are sure cle complete with maps and photos, great, that she will carry cut her position with the :'11 publish all I can get. However, if you same fervor she has shown in these past pur­ just want to scribble a little note to me on suits. Mary Ellen Eckhoff, probably the most a napkin, that's great too. What I need is a active cave diver in Florida, is also the lot of thoughts, feelings, dive reports, and most active NSS cave diving instructor and experiences from a lot of different cave di­ al so the organi zer of one of our most suc­ vers to keep this newsletter interesting and cessful cave diving workshops. Though she useful to the entire section, not just those characteristically underestimates her abili­ of us in Florida. Say you can't write! Ok, ties, you can be sure she will keep you well I'll write it for you, but send me the infor­ informed as secretary. Steven Maegerlein a mation. Help the section to have the best long time officer and Indiana cave dlver newsletter in the NSS. A NEW TYPE OF DIVERS DRY SUIT by John Zumrick (NSS 18766) Slowly, a new generation of dry suits will consist of an outer dry suit garment which. hit the commercial market. These new suits unlike the foam neoprene dry suits, offers no offer the potential of keeping a diver warm insulation in itself, but functions primarily for upwards of six hours in near freezing as a water barrier. Tl:tis suit will be much water. Furthermore, these suits will suffer like the currently available Viking dry suit, only a small loss of insulation as depth in­ being made of a very tough though noninsula­ creases when compared with conventional wet tive material. Though very durable, these suits or the foam neoprene dry suit. suits will limit diver motion somewhat. To retain as much mobility as possible these Developed by the U. S. Navy, these su its suits will be tailored somewhat oversized. 3 Underwater Speleology vol.a,No.1 Another material, crushed neoprene may help scent, compression of the closed cell foam reduce this problem somewhat. material of the suit will reduce the divers insulation perhaps to half that of the The entire insulation to the diver is pro­ surface insulation. Since all the insulation vided by the underwear which is made of a for these new suits is provided by the synthetic insulator called Thinsulate which underwear, and since adding air to the sui: is manufactured by the 3M Corporation. will prevent compression of the Thinsulate Thinsulate appears nearly ideal for use un­ underwear, insulation at depth is nearly the derwater. It offers almost twice the insula­ same as on the surface. tion of down at a fraction of the cost. Un­ like down, Thinsulate retains most of its in­ The Viking dry suit is already available sulation when wet. Because Thinsulate is and the crushed foam suit is expected soon. hydrophobic, any water leakage into the suit It is hoped that the Thinsulate underwear is repelled by the material rather than ab­ will be available soon. You should, however / sorbed. As a result the material below the be aware that currently available outdoor surface layers remains dry and retains its gear made of Thinsulate uses a different type insulation. of Thinsulate material that is not as suit­ able for dry suit use. Although most of the When using a foam neoprene dry suit part initial suits ~ill be directed toward the of the insulation is provided by the suit commercial diving industry, it is hoped tha: and part by the underwear worn underneath.
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