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JUL 12 '94 10:30 HEND~KSM IN INGCO <br />r ~ <br />• <br />Hendrlcits Mining Co.. Inc. <br />Caribou, Colorado <br />)uly 08, 1994 B~irt,¢rlu. ~/r-o~d./F~iiir..l'vur. ty~'4 <br />Mr. ]eff Spinzig <br />Core Laboratories <br />10703 E-. Bethany Drive <br />AurorA, Colorado 80014 <br />Trn»smission via f)tx: 303 751-1784 <br />III IIIIIIIIIIIII III <br />999 <br />~~y~ F. <br />`-. .,: ~a <br />1~CA1' JCir <br />Ott Jutte 15, 1994 we delivered to your lab cotnpositc tttill heads and tail sentplrs via <br />Chain of Custody Recotd # 01300. 7'hesc samples were produced fpr us by Sweeney <br />Mittittg and Milling Gotnpany through a laboratory bulk 1lutatiolt lest. The ore uae,l for <br />t]»s test came fi'otn a highly representative bulk channel sampling of our tunnel lev+;1 <br />Apache vein at the Cross Mine. The bulk channel sample totaled 400 lbs. This sample was <br />Crushed fltrough an 8" X ] 2" jaw crusher to 1" minus, The crushed tnateriAl was mixed <br />thoroughly and tltett coned attd quartered. The Division ofMinerals and Geology, ;>tete of <br />Colorado, Mr. Bill York-Fiern approved ihis bulk sampling prOCedure. The bulk head <br />sample was then delivered to Sweeney for the lab trill test. The heads attd tails sarttples <br />fl•ottt tl»s lab mill test were then delivered to your lab on June 15, 1994. <br />On tltc composite head samples we need the following test work completed: <br />1. Acid BASC Accounting tests. (Per the Statldtu'd li t~/EPA 8~ <br />2. Whole Rock Analysis (per EPA Sfandards/detection limits to ground and <br />surface water standards. -~ <br />3. Meteoric Water Mobility per thr~veda list. ~ndittg Bill York-Fiems <br />final cteterminatlon). <br />4. Humidity Co11 Tests - to determine effluent levels over time with detection <br />]units As low as State Greund tvatcr standards. Tho State is interested <br />if arty acid cart be produced over limo. What metals could leach out. <br />Tltc Humidity Cell Testing should not take place until the results of the above <br />test work 1s completed. <br />Ott the composito fail sand sample we need the fullowittg test work completed: <br />1, Wltole Rock Analysis (Per above). <br />Mr.l3ill Yurk-Fiorn front the Division of Minerals and Geology, Stall of Colorado <br />(303 - 866-3567) will call you today to further diswss this work. Please contact me if you <br />have env questions. <br />'~-> N <br />'fhomns S. ettdricks <br />~: Mr. Dill York-ItiernlMr, John liondcrsonlMr. Mike SavagdMr. Bruoe Durham <br />hefcrcnce: Slormwaledtvlt.RU Permit/Mfll Studies <br />AnAC6monts/Corc 4ab Clwin of Cuelaly Rooordc <br />Mal[tng Address: Post Office Box 653-Cartbou • Nederland, Colorado 8o4ee-o6s:5 <br />Phone:Oftlce 303-aa3-tSOY Mlne 503-YS8-3806 Pax N 301.458.0404 <br />