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TECHNICAL REVISION NO. 6
<br />U. S. STEEL 1~1INING CO. , INC.
<br />SOMEfiSET MINE
<br />.,-, .,
<br />-V«-
<br />~1 ii? hl].n7 nq and I;ni_i 3m•3 r..1 Jn I'•16i ri for SOrt1 E?r'S;?+. I`ilne CC,n1_ci ].ns a
<br />rF=!al!~~sr ror ..a v_~.ri a. rl lc.=• to res*_oring three areas !.o :+.ppr~-~~:tlr~:a.te
<br />„r-i.•-_i.n:-,l ,:I:,n~t,~rl.r..~_^ I:..,,fsr' i._o p~,~3~~s .:..lin-4 t.~~ ~.lic~-lli. '_:tE.r~F,
<br />s1^I-~1O_ iildL'e r..~stc:ratlon of the Pear~and Hubbard C,an•,on ~:entllaticm
<br />f.,,:.:t.l.t.tr•==; -.and thr.~ fic-'.r Cxanyan fa `ie•;m degas --tt~a .t~npra•_ttc_,.1.
<br />Li, r-. 'r l-~_s.t hl ~r r~tny Co. conlducts~•d „ :;t;abtlity anal ,~•:>ts of i~_h,
<br />I~?r':iL?~.re~=.l t ~ na.l ront.l,l-~.rs contalneti i n the =.~,m•=r=~;t h1+_nr:= per-mtt
<br />aL.;4+l.ic:.;r:.:iurl. I?-I -• s~tallilit.~: analy_ts .tndicat.e~.J th'lat. the prc?1,os.ed
<br />flri:,.l ~•_~r-,i::c;ur-s ror- tl-,e Pear- C._;nyon Fan ~•.rra_a. did not meet the
<br />mtnlnn_In~l ~aa.Fr:,ty Far_tr.r- regal-urenrent of .L.=:. 7I-.ls r~=vision prASents
<br />the r-~:~_~=~mm:<rlr]:=d i~in.,.f. sl„1,e~_ fr-u,n i=h-Ir_ _tablllty analYSls iprepared
<br />?rl F:_:br~~..:r.: 1?%~ a.r~lj :_~_rhmittad 'to the Givislon? fer inrlr~.sion
<br />In thc: _nrner-_at hllne 1=~rnu.t.
<br />
<br />ri7p'47f4F!^~{~Ragt;,i(g~dev~alaped f?y kh
<br />i l~:::.,c1 h.. per i~Ol~ip LhB c,ar~e*v fa.
<br />Uni~•~ersity c-~t 1~.entu.~=4.•+, w.;s
<br />ct[il' c-:lull~a.+:lc;ns. r3 c:ir~::!~.1._-r
<br />y 1"fJf,a'tlny 41a~g5, 1ti~ m_t`
<br />s~_rm ,_IF rooment~ tean cilr~q to .. ~..~.se
<br />TPIe saf~.ty fe._tar is the
<br />Can C +. ].~,_~_11a1:~_' t'.hle °i?.Fni_y' 4~.ii:tor
<br />t.hr= stmpLlFied (=1=_sttop nlethl.?d.
<br />!ISin,-~ the ~impli~lezd .N1_help
<br />~<..ii~.lr~ s!li racy- is a~-sr-rm._•d r~.nd~ar-
<br />i ~:~ ~.ii. ~, c,.Jad i ni:o ;, L ~'::_.s anci i:he
<br />and r,___,._,r f.?.,.1.~_rre al-e determined.
<br />r::tic, ..~ t4~„~~;.e t~~~rl ~IJ.m~s, f=: L=.=II~IE
<br />t~~.=.LI-.q ~_~ ta~,_~r the oar-m~;l meth~~~od or
<br />H17. _..?1•_Lrl _,i:;.an:a wer-e cc,mpl•zr~,,.,d
<br />I~leti-I p!].
<br />i::EAR CI~:EEk:: FAN AREA
<br />
<br />A soil sample was taken at the Pear Creek: Fan and anal;~:ed f~=•r-
<br />thte internal angle of friction and cohesion. 'rhe r=salts wcar~~
<br />t-rsed to mode]. the soli •_haract~arlsti~-s of 1=he E!=ar Canyon 1=an
<br />Area. '
<br />1~1ap i~3-1~-: contained in the ~inmerset Kline - I•linlny and F:ec.Lamatl~?n
<br />Flan I.pa.ge _.lin-1!~I shows a plan •:iew I~f the fan ar-ea. Cro~;s~-
<br />se~_tlvn f-1-A., B-P and C-C are shown nn Map AA-J..'91 ipage -,.I)ti-•'r.
<br />U. '_. ::;tes•1 I`lining C:o conducted a Field investigation to determine
<br />th-la appro:,i.ma.te yeol.o~-sic strl_rct!rre of the ~=ross-sE•_tlons. E.;hlbits
<br />F=. G a.nd H were prlrpared Following the investigation. F'relilrltnary
<br />caL~=l_rI:?.tiona on r_r-esa~-scactions (~--P and l:-C indicated t.ha.t they
<br />did nc±. meet ±he reyr.ur~=d minimum ~_aFely factor. U. ~. Steel
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