Effects of the June, 1975 Effects of the June, 1975 Mike Horse mine tailings dam failure on water quality and aquatic resources of the Upper Blackfoot River, Montana effectsofjune19700montrich Year: 1997 APPENDIX r MONTANA BUREAU OF MINES AND GEOLOGY BUTTE, MONTANA 59701 July 21, 1975 ^/ '^*i ^l ^^^> ^h ''>u ^O m : ^^^ I Montana Fish 5 Game Sam Mitchell Building Helena, Montana 59601 Liter Spence Attention Mr Gentlemen: This letter contains the requested analyses of the sampll of iine'tailings from the BlackfootRxver above Shouey Gulch that you sent to our laboratory June it. To provide
Effects of the June, 1975 Effects of the June, 1975 Mike Horse mine tailings dam failure on water quality and aquatic resources of the Upper Blackfoot River, Montana effectsofjune19700montrich Year: 1997 APPENDIX r MONTANA BUREAU OF MINES AND GEOLOGY BUTTE, MONTANA 59701 July 21, 1975 ^/ '^*i ^l ^^^> ^h ''>u ^O m : ^^^ I Montana Fish 5 Game Sam Mitchell Building Helena, Montana 59601 Liter Spence Attention Mr Gentlemen: This letter contains the requested analyses of the sampll of iine'tailings from the BlackfootRxver above Shouey Gulch that you sent to our laboratory June it. To provide as much information as possible about the sample, I have done several things. First, in preparing the sample for ^;^,^^;,l^^'''i tracted 358 ml of water from the sample ^y filtration, i tractea jjo mj. ^ âu^,,+ en tr^ PO ner-cent of the total estimate this to be about 80 to 9U P^J^^^ moisture moisture the sample contained. B> ^^'I^oying xnt; this way rather than by evaporation, I thought that we metals in the water. The solid phase of ^he sample was then^dried^to^.^^ The sample was divided into two segments with a J°^|5 sample Splitter. Segment ';A'/^^.P^i^^^i^i,'° â .llK'ltt and analyzed for total Cd,Cu,Fe,Ni,Pb, and Zn, II for concentrations. See Table Segment 'B' was passed through a !f,^f 'V.^^ ni separate the various particle sizes. Refer to Table fo? per-cent particle size gradation values. Each size gradient was divided into two equal parts. ? = Hrpj:inr.;' ra?^/is\:°n, s^nfto you for yiur'inspection or visual comparison in conjunction with this report. A-55 ^T, DEVELOPMENT OE »S MINERAL RESOURCES BY GATHERING AN3 PUBUSH- ;«..... OE ANO WAS .^ ;,,;°;;°:f a' cJuO NO « , NON.« COA. CU, =«. AN. UNOEROROUNO WATSR SOPPLV. * â â â¢0,v,AT,OK ON THE GEOLOGY. TOPOGRAPHY. MINERAL DEPOSITS OF THE STATE.
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