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2 < M~l4i T.. c-s) T.. 1+;.~.,?S _;~1ti>i..!:?*7t!-~.~~,., st1l4mar (ROUGHLY) DEPTH. THCKNESS AND ELEVATON OF HOLES ','..:.:. : BOTTOM TURKEY T!!r!...~SS *.,.....,,'18 :i,> 84'1 abov~ Si. ~~5,: >'15k:~' ;1~\'fF,.' 142'~'.876:;1077,' 138 Drilled rn~rkey:'~6 216 ~,.~~~:\. 14'1,.: ' ' ~58.. '., thiokness ,;, tt 845 'tt 78 plus 831 'above SE 820 f //,,.~~-'~-~.~ ~.'.. /.. ' :.( ~ ~, ' ~ -...,'....,.'O~, '._ (s) J.M.Heizer ;. ~ }. ::-... ;..,', i. -'r- '.1.

3 LOG OF DAMOND DRLL HOLE - NO. 74 FNSHED MAY 31, 1941 m~t.(i T-74 r... pre~vi.ously reported to 495 '. : 495~'(:r~' '. 560 Hard,:caving,cliilkerg~ad~ng into a mor,e; uniform, ;,;:,1';,.,f~;~~~~~}:~< ha'r~ rock with ciink~ry spots '.,, 566' :':;:-,?--;. ',5'75,..,' Soft rotted clinker, partial cavity in soft rotted '.'f,~',:.:';~;0.< rook, between<'5'74.6 and,5'75 ~.:;~~~:;~ :~::~:.;;.. ~t:~~~~~<:u~~ :....'. > '..,~. :.' :'~f:{-:~ ':~ ':'.,, 7~;l,j:; 7:;?:;r.'tOLD~lWmf,varYing inh&~dness wi thmap:y small.,.,. 'cavi t:!es~ Cavity 600,to, ~'. T~is. h,ole'is bexow gt:i'tlge' for last 200,ft., but reamer shell was used which would barely pass the ring gauge to bottom. Et,Ltire'hole bad to, cave - particularly bad at l74'~180 - also bad spot at 440 Cased to 98.1 From 2'70 to 365 a strong suction of air in rods from downward flow of water. Entirely fades out at 366. May 3 with hole at depth of with chopping bit on rods and rods to bottom water stands at 3'71.8 CURRENT ~1E'llER READ:NGS DEPTH OF HOLE 506 in meter ciil<-,..,...,.;,i'~,>,,' ~. :~{.,,240 Rev. '3'70 n tt,000 tt May 8 Depth f valve to stop downward flo , 000 Rev. 000 Meter records a few rev. on downward movement of rods. fine borings in hole at 512 & 514. Small leak suspected 040. May 20 Hole 549 chop bit on bottom water stands at...,e, ,..le~5'76 water 12'7.5 (blow' through) No borings at ~ May 23 Hole 5'76.2 chop bit 9n bottom water chop bit on bottom water May 26 Hole chop --2,.8-- May 2'7 Hole, chop bit bottom water -,bit bottom water,7-'- 24'7.5-- May 29 Hole 62l.~ -- May 30 Hole 632 chop bit bottom water rforated at bottom water stands from ~l'av,.c., i as casing formerly stood. Accumulation

4 \ ~, Proviously re 1 )orted. to ':b Hard caving clinlmr er8d.ing into a more uniform hard rock with clinkery spots Soft rotted clinker, partial cavity in soft rotted rock b et'oeen and OLD \JlAU varying in hardness with map:y small cavities. Cavity 600 to This hole is below gauge for last 200ft., but reamer shell was used which would barely pass the ring gauge to bottom. Entire hole bad to cave - particularly bad at also bad spot at 440 _. Cased: to 98.1 From '270 to 365 a strong suction of air in rods from downward flow of water. Entirely fades out at May 3 with hole at depth of with chopping bit on rods and rods to bottom water stands at OURRENTMETER.READNGS DEPTH OF HOLE 506 in m~t~r. May 8 valve to stop downwardfl 'Depth4S' tf n Rev. 370.,r; OQO. n Depth n Rev. 000 Meter records a few rev. on downward movement of rods. Accumulation: of fine borings in hole at 512 & 514. Small leak suspected at 530. Leak at 540. May 20 Hole 549 chop bit on bottom water stands at May 22 Hole 576 water (blow through) No borings at 549. Slickensides at 553. May ~~3 Hole chop bit on bottom water May 24 Hole chop bit on bottom water r'~2:{ 26 Hole chop bit on bottom water May 27 Hole chop bit bottom water May 28 Hole chop bit bottom 'Nater May 29 Hole 621, chop bit bottom water May 30 Hole 632 cho}! bit bottom water May ' tt pipe in hole perforated at bottom water stands from top of pipe which is S51me leyel as casing formerly stood. Accumulation 'fin'e'bo;~'ng~~;'~~'bbt tom' of. hole...:> '~':;', ~. ',:'.. '.' (s) J.M.Heizer copy

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10 UNTED STATES DEPARTMENT OF THE NTEROR GEOLOGCAL SURVEY we) - //7 - ~ fc; -,'lrc) -,1)(,- 1.:(} 9',.-./:,~Of. ~,~ - ( '901 - <]'00'/ :',' J ~ - 3'11.>' -6'~LS', - 'tl..$ - J1iF' \. - )/J' ~ 0/. -L:. 'a.t~; l'-~.~r '~ o-,'~ ~..,. A. 0' ~. i:cw.:.! aj.:'!.',

11 HpLE 74:,- - o LOG OF DAMOND DRLL HOLE Finished Feb. 22, ~Oil and lumps 01' rotted rock.,6':, '.11.2 ~ml1e Turkey olinker; partly rotted. '1;1,. 2,5,OTmne Turkey, badly broken, with many trothy spots. ', ~:':;~i~~>~;~ ;~:2~~~:a ~0i!Jo:;:~l ~~o~i~;~h f:;;a~e e ot 0;0!1 ~li~:~~' cha'~a:~ter;. ' :t: c - All traotures tilled wi th clay. ot leaky. '' Firm olayor soll, brown on top.' ot leaky. Nolaak on this oontaot. \ 8'7.1 ~.5 Hard :t>lue basalt (boulder) A ortj n 01' this oore shows -'.,; ~v1denoe ot drag or m r pressure Same as '13.4; ' , Partly rotted basalt soil. Does not ~le8k oroev8.. 13&.'1 '}Woken, 'oanng, 1e O~ay or 8011 ot ~ Does not leak. s. Very compaot. Sticky '11-d Turltey, very oua' U1 te sott. 153 O~vide Heavy lea., sott clay-like materia ~ 19?5 Wild Turkel troalkard to very soft Soil, wit 'tew 1,of~ted rock. 221 Wild Tur,average \harder and less broken. 232 Smooth 0 y or soil w ~h a tew lumps of rotted rook. 243 N.D.S. b alt with a ry tew lime crystals. Some of this. oore is ttled a ye~ wish green. Leak N.D.S. d basalt v' First 8 ft. quite clinkery. 285 Caving, so J:)ro~/rock with a trace of clay or soil in p~ti),-res 'B611e-'ifsd to be leaky. 312 / ppears to be the same as 243, otted oli er, or partly rotted gravel in soil mass. Believed be leaky N.D.B.hard salt (Contact here?) 'Rotted cli ere Much of this is as soft as clay D.S. ha gray basalt. Badly broken tly ed olinker; oores about 20%, Caves badly~ - ~ ove but greater proportion of hard rook. 4Mh8 4:5]., \ Broken oaving partly-rotted rock N.D.S. hard blue basalt., ' Old Maui, quite porous, 'badly broken. Considerably h~~4~~~ : :,,, than found in -same position in hole 65 until a' detjtlj,,,;:> or~48.5 isr$aohed. but below this depth it is quite rott e(t:~~n.d~, ' soft. Leaky.':; <, 490 ';8 N.D.S. ha'ld~av1ng clinkel, rotted first toot,.;'<'.,.,' O~~JW':1'O 98.1, Leaks:,lB,.,~,'::~P,:,,;'f;.~, ~~~,~,.::Q,~J'l()e :a'nd leelk:~301, Leaks at ' 166;: Oav~;l&7;'~o :i169;lie,ak 1' Wav. &. Leak. 266; S(Heavy leak); Heavy leak also at 495 and cavity. Leak oaving spots rat ,' ~.,

12 1../44/3'.Sheet 112 'BOLE '14, oontinued '.~!.-, ~,'c:.;~:' L, j\y' ~:~l:.l ~)i~:l -.~'~.., ~ '.'l,.,, '.<.:.<.~,.'.~.,.>-.,...,,, ',., OJ l~~,,;,~i.1 l'{;,',' \::. ~>C ~-;,_: i --!.,:., i V~:,th H {1.:Ct Re~T. ~~;.:c) -j J:.')f~ ~~'r t, n \'.... J:... _. ',