,u4,s4 ,,dep>tm5t ,,( ,,! ,,int]ior1 ,,/ew>t ,l4 ,,udall1 ,secret>y ,bureau ( ,reclamation1 ,floyd ,e4 ,dom9y1 ,commission] ,,gl5 ,,canyon ,,dam ,,physical ,,data--,,gl5 ,,canyon ,,/orage ,,unit ,,dam ,type3 ,concrete ar*4 ,height above riv] b$ ft4 #ehj ,height above l[e/ ft4 #gaj po9t 9 f\ndation ,cre/ l5g? ft4 #a1ejj ,cre/ wid? ft4 #be ,base wid? ft4 #cdj ,concrete cu4 #d1hcj1jjj yds4 7dam7 7p[]plant7 #bge1jjj ,!re are #c million cu4 yds4 9 ,hoov] ,dam1 & #aj million 9 ,gr& ,c\lee4 ,cre/ elevation ft4 #c1gae ,maximum dis*>ge sec4 ft4 #bgf1jjj ?r\gh spillways ,,res]voir ,capacity4 ac4 ft4 #bh1jdj1jjj ,area acres #afb1gjj ,elevation res]voir ft4 #c1gjj wat] surface ,! riv] elevation at ,gl5 ,canyon is #c1adb ft4 ,l5g?4 miles #ahf ,,p[]plant ,capacity kw4 #ijj1jjj ,numb] ( units #h ,capacity ( ea* kw4 #aab1ejj g5]ator4 ,capacity ( ea* turb9e hp4 #aee1ejj ,illu/ration3 ,,! ,,project ,,& ,,! ,,dam ,,gl5 ,,canyon ,,florida ,,p9e ,,riv] ,,ext ,,navajo ,,hammond ,,la ,,b>ge ,,se$skadee ,,lyman ,,flam+ ,,gorge ,,c5tral ,,utah ,,em]y ,,c\nty ,,silt ,,paonia ,,smi? ,,=k ,,curecanti ,! ,gl5 ,canyon ,dam1 ,p[]plant1 & ,res]voir1 :i* w be kn[n z ,lake ,p[ell 9 honor ( ! we/]n explor] & geologi/1 ,john ,wesley ,p[ell1 are ! pr9cipal /orage & p[] features ( ! ,upp] ,colorado ,riv] ,/orage project4 ,! dam w be on ! ,colorado ,riv] 9 ,arizona1 #ac riv] miles bel[ ! ,utah bord]4 ,lake ,p[ell w /ore ab\t #bh1jjj1jjj acre feet ( wat]--next 9 size to ,lake ,mead1 d[n/ream1 ,am]ica's l>ge/ man-made lake--to help solve a wat] res\rce developm5t problem 9 ! ,colorado ,riv] ,bas94 ,! crux ( ! problem is ! division ( ! riv]'s wat] betwe5 ! ,upp] & ,l[] ,bas9s ( ! ,colorado ,riv]1 z provid$ by an int]/ate compact4 ,! volume ( wat] fl[+ d[n ! ,colorado fluctuates %>ply f ye> to ye>4 ,consequ5tly1 !re mu/ be long-t]m holdov] /orage capacity 9 ord] to meet d[n/ream ne$s & compact requirem5ts--includ+ requirem5ts = ,mexico "u an int]national treaty--& /ill p]mit ! ,upp] ,bas9 ,/ates to deplete ! riv] = up/ream use4 ,?is problem w be solv$ by con/ruction ( a sy/em ( /orage dams & res]voirs 9 ! ,upp] ,bas91 ( :i* ,gl5 ,canyon1 ! l>ge/1 is "o ( f\r initial units au?oriz$4 ,only #ae miles above ! divid+ l9e betwe5 ! ,upp] & ,l[] ,bas9s1 x w /ore no wat] = use up/ream or 9 ! imm$iate vic9ity ( ! dam1 b is ! pr9cipal unit /or+ wat] to regulate ! riv] & !reby fulfill compact commitm5ts to ! ,l[] ,bas94 ,! sale ( hydroelectric en]gy g5]at$ at ! multipurpose dams w return practically all ( ! co/ ( ! project & a l>ge "p ( ! co/ ( #aa p>ticipat+ irrigation projects au?oriz$ = initial ,upp] ,bas9 developm5t4 ,t1 9 g5]al1 is h[ ,gl5 ,canyon ,dam on ! ,colorado & ?ree o!r initial dams on its tribut>ies w aid 9 develop+ ! area4 ,! p>ticipat+ projects j ref]r$ to1 & scatt]$ ?r\gh\t ! ,upp] ,bas9 7#aa ( !m au?oriz$ = con/ruction71 w irrigate ab\t #acj1jjj acres 9 new f>ms & improve irrigation on ab\t #bcj1jjj acres 9 old ones4 ,"s #be o!r projects are "u v>i\s phases ( /udy4 ,f>m+1 9 consequ5ce1 w greatly increase4 ,wat] f ! #d big /orage res]voirs w1 z plann$1 turn g5]ators ( ab\t #a1bjj1jjj-kil[att capacity1 & indu/ry w use ! p[]4 ,m9]al deposits ( ine/imable value1 uranium among !m1 w be m9$4 ,flood control & navigation on ! ,colorado w be improv$1 & ! nation's playgr\nds w be greatly enl>g$1 = "s ( ! _w's f9e/ recreation places w lie along ! %ores ( ! res]voirs or lakes t w =m beh9d ! dams4 ,gl5 ,canyon ,/orage ,unit w be ! key/one 9 ?is :ole /ructure4 ,! dam spans ! riv] ne> its exit f ! ,upp] ,bas91 z if 9 ! sp\t ( a great funnel :]e x c control all ( ! wat] 9 ! funnel's cone--! ,colorado's own fl[ & all t its tribut>ies fe$ into x up/ream f ! dam4 ,! p[]plant w g5]ate ab\t #ge p]c5t ( ! project's total p[] & ! res]voir w contribute ab\t #ge p]c5t ( ! wat] /orage t ! ,congress au?oriz$ 9 #aief z initial developm5t = ! ,upp] ,bas94 ,?is res]voir or lake1 ext5d+ #ahf miles beh9d ! dam1 w be flank$ by rem>kably beautiful sc5]y4 ,! ,nation's ga9 9 new public & private weal? w be trem5d\s4 ,! ,f$]al ,gov]nm5t w f9ance ! project1 b ! p :o use ! wat] & p[] w repay ab\t #ii p]c5t ( ! co/--ab\t two-?irds ) int]e/4 ,,bridge ,,at ,,! ,,damsite ,illu/ration3 ,bridge ,bridges 7 among ! fir/ ess5tials at ,gl5 ,canyon damsite4 ,! v]tical walls ( ! ,canyon rise ab\t #gjj feet above ! riv]4 ,! di/ance f rim to rim is only #a1bjj feet 9 a /raight l9e1 b x is ab\t #aij miles by road4 ,! ,gl5 ,canyon ,bridge1 a spectacul> rim-to-rim highway1 spans ! canyon imm$iately d[n/ream f ! dam4 ,x is ! highe/ & second-longe/ /eel ar* bridge 9 ! ,unit$ ,/ates2 its #a1jbh foot ar* /&s #gjj feet above ! riv]4 ,! deck is #a1bga feet long4 ,! roadway is #cj feet wide & is p>allel$ by #d-;foot sidewalks4 ,! bridge 0 d$icat$ & op5$ to public use on ,febru>y #bj1 #aiei4 ,mat]ials & equipm5t are transport$ to ! canyon floor by highl9es--heavy cableways /ret*$ betwe5 t[]s1 two on ea* rim4 ,loads ( #ej tons are l[]$ f !m on p5dant hooks4 ,,con/ruction ,illu/ration3 ,con/ruction 9 progress ,gl5 ,canyon ,dam1 l all l>ge ,reclamation dams1 is be+ built by private con/ruction companies t are aw>d$ contracts by competitive bidd+4 ,! prime contract1 total+ #ajg1iee1abb1 0 aw>d$ to ! ,m]ritt-,*apman & ,scott ,corporation ( ,new ,york ,city1 ,april #bi1 #aieg4 ,x provides = con/ruction ( ! dam & p[]h\se & is ! l>ge/ s+le contract ! ,bureau has ev] aw>d$ & probably ! l>ge/ = any type ( con/ruction project4 ,by ,june #aifj1 ! contractor _h complet$ ! div]sion & spillway tunnels1 l9$ !m ) concrete1 built ! c(f] dams 7tempor>y e>? /ructures div]t+ ! riv] ar\nd ! damsite dur+ con/ruction71 & excavat$ ! f\ndation ( ! dam4 ,fir/ placem5t ( concrete 9 ! f\ndation ( ! dam & p[]h\se 0 obs]v$ by public c]emonies at ! damsite on ,june #ag1 #aifj4 ,initial /orage ( wat] beh9d ! dam is s*$ul$ = e>ly #aifb4 ,a #f1cib1jjj contract = ! manufacture ( eight #aee1ejj-;horsep[]1 #aej-r4p4m41 v]tical-%aft hydraulic turb9es = ! p[]plant has be5 aw>d$ to ! ,baldw9-,lima ,hamilton ,corp4 ,additional contracts = g5]ators & o!r adjuncts w be aw>d$ lat] to equip ! dam & p[]plant4 ,gl5 ,canyon's fir/ hydroelectric g5]at+ unit is s*$ul$ to g on l9e 9 #aifd4 ,,recreation ,,plans ,illu/ration3 ,wat] recreation ,! ,gl5 ,canyon ( ! ,colorado ,riv] is an unusually placid1 #afb-mile rea* f ,hite1 ,utah1 to ,lees ,f]ry1 ,arizona4 ,major ,john ,wesley ,p[ell1 :o head$ ! fir/ exp$ition d[n ! riv] 9 #ahfi1 nam$ x ,gl5 ,canyon because ( ! occasional oak gl5s along its banks & at its junctions ) tribut>ies4 ,! #ahf-mile-long ,gl5 ,canyon ,res]voir 7,lake ,p[ell7 w ext5d up/ream into ,cat>act ,canyon4 ,! lake & adjo9+ l&s h be5 e/abli%$ z ! ,gl5 ,canyon ,national ,recreation ,area "u ! ,national ,p>k ,s]vice ( ! ,dep>tm5t ( ! ,int]ior4 ,?is is ! /atus ( ,lake ,mead & its environs beh9d ,hoov] ,dam4 ,! ,p>k ,s]vice w soon und]take con/ruction ( recreational facilities = public use z ,lake ,p[ell beg9s to fill 9 #aifb4 ,! ,gl5 ,canyon ,recreation ,area promises to become "o ( ! ,nation's out/&+ t\ri/ attractions4 ,illu/ration3 ,lake ,p[ell1 beh9d ,gl5 ,canyon ,dam1 w be flank$ by v>i$ & beautiful sc5]y4 ,illu/ration3 ,! fir/ placem5t ( concrete--,june #ag1 #aifj4 ,illu/ration3 ,a]ial view ( dam & t[n ,,highways ,,to ,,gl5 ,,canyon ,,dam4--,excell5t1 new1 pav$ highways h be5 built to ! ,gl5 ,canyon damsite4 ,a #gf-mile highway ?r\gh ! highly sc5ic area has be5 built f ,kanab1 ,utah1 to ! damsite4 ,a new #be-mile highway ext5ds nor?w>d f ,bitt] ,spr+s to ! damsite4 ,bo? ( ^! highway l9ks connect ) ! ,gl5 ,canyon ,bridge to =m a new l9k 9 ,u4,s4 ,highway #hi4 ,! ,gl5 ,canyon ,bridge 0 complet$ 9 ,febru>y #aiei4 ,,di/ances ,,to ,,gl5 ,,canyon ,,f3 ,kanab1 ,utah #gf miles ,flag/aff1 ,arizona #ace miles 7,flag/aff & ,m>ysvale1 ,utah1 #aij miles f ! damsite1 are ne>e/ railheads47 ,c$> ,city1 ,utah #afa miles ,pho5ix1 ,arizona #cjj miles ,salt ,lake ,city1 ,utah #chd miles ,national ,p>ks3 ,zion #ajj miles ,bryce #ach miles ,gr& ,canyon1 ,nor? ,rim #abd miles ,gr& ,canyon1 ,s\? ,rim #adb miles ,two #af mm4 color1 s\nd films1 ,canyon ,conque/ & ,key to ! ,future1 are available ^u reque/ = %[+ to s*ool & civic gr\ps1 clubs1 & o!r public ga!r+s4 ,bo? films %[ m5 & ma*9es at "w on ?is *all5g+ ,reclamation project4 ,s5d y\r reque/s to3 ,u4,s4 ,dep>tm5t ( ! ,int]ior1 ,bureau ( ,reclamation1 ,p4,o4 ,box #cfj1 ,salt ,lake ,city #aj1 ,utah4 ,ea/]n area resid5ts may write to ! ,u4,s4 ,dep>tm5t ( ! ,int]ior1 ,bureau ( ,reclamation1 ,wa%+ton #be1 ,d4,c4 #aifa--,,revis$ ,u4,s4 ,,gov]nm5t ,,pr9t+ ,,(fice3 #aifj ,,(--#egdegg ,,que/ions ,,& ,,answ]s ,,gl5 ,,canyon ,,dam ,u4 ,s4 ,,dep>tm5t ,,( ,,! ,,int]ior1 ,,/u>t ,l4 ,,udall1 ,,secret>y ,,bureau ,,( ,,reclamation1 ,,floyd ,e4 ,,dom9y1 ,,commission] ,,! ,,dam ,,hi/ory ,q4 ,:5 0 ,gl5 ,canyon inve/igat$ z a pot5tial damsite8 ,a4 ,fir/ 9 #aiba1 !n aga9 9 #aidf & 9 subsequ5t ye>s4 ,q4 ,:5 0 ,gl5 ,canyon ,dam au?oriz$ = con/ruction8 ,a4 ,april #aa1 #aief1 z "p ( ! ,colorado ,riv] ,/orage ,project4 ,q4 ,:5 did "w actually beg98 ,a4 ,! fir/ bla/ 0 detonat$ on ,octob] #ae1 #aief4 ,,completion ,,s*$ules ,q4 ,:5 is ! dam s*$ul$ to be f9i%$8 ,a4 ,con/ruction ( ! dam & p[]plant is s*$ul$ = completion 9 ,m>* #aifd4 ,q4 ,:5 is ! fir/ p[] s*$ul$ to be g5]at$8 ,a4 ,! fir/ p[] %\ld g on ! l9e 9 ! spr+ ( #aifd4 ,,excavation ,,c(f] ,,dams ,q4 ,:at are ! c(f] dams8 ,a4 ,l>ge1 tempor>y e>? dams across ! floor ( ! canyon & locat$ up/ream & d[n/ream f ! f\ndation & keyway areas :i* m>k ! axis ( ! dam4 ,q4 ,:y are c(f] dams built8 ,a4 ,to div]t ! ,colorado ,riv] ar\nd ! damsite ?r\gh huge div]sion tunnels & to keep wat] out ( ! "w areas dur+ con/ruction ( ! dam & p[]plant4 ,! deepe/ excavation to b$rock 9 ! dam f\ndation is #acg feet bel[ ! =m] riv] level4 ,,div]sion ,,tunnels ,l5g? 7,we/7 #b1gdi feet ,l5g? 7,ea/7 #c1jaa feet ,diamet] 7l9$7 ( bo? tunnels #da feet ,q4 ,:y does ! we/ div]sion tunnel c>ry ! mo/ wat]8 ,a4 ,because ! intake ( ! we/ tunnel is #cd feet l[] ?an ! intake ( ! ea/ tunnel4 ,,spillways ,q4 ,:]e are ! spillway intakes locat$8 ,a4 ,!y are j up/ream f ! keyways1 "o on ea* rim ( ! canyon4 ,q4 ,:]e w ! spillways dis*>ge8 ,a4 ,/eep1 incl9$ tunnels w ext5d f ! spillway intakes to int]sect ) ! div]sion tunnels f> bel[4 ,?us1 wat] go+ ?r\gh ! spillways w em]ge f ! div]sion tunnels z ! riv] wat] n[ does4 ,q4 ,:at is ! maximum comb9$ capacity ( ! two spillways8 ,a4 #bgf1jjj cubic feet p] second4 ,,p[]plant ,q4 ,:]e w ! p[]plant be locat$8 ,a4 ,on ! up/ream side ( ! ,gl5 ,canyon ,bridge j bel[ ! dam4 ,! p[]h\se w ext5d across ! canyon floor p>allel to ! bridge4 ,q4 ,h[ l>ge w ! p[]plant be8 ,a4 ,! p[]h\se /ructure w be ab\t #ffe feet long & ab\t #afj feet1 or #af /ories high1 above ! d[n/ream riv] level4 ,eight g5]at+ units w be in/all$4 ,! rat$ capacity w be #ijj1jjj kw = ! p[]plant4 ,q4 ,:at are ! squ>e columns betwe5 ! dam & ! p[]plant8 ,a4 ,^! huge concrete pi]s w support ! #ae-;foot diamet] p5/ock pipes :i* w c>ry wat] f ! res]voir ?r\gh ! dam & into ! turb9es 9 ! p[]plant4 ,,g5]al ,q4 ,:at are ! num]\s black spots above ! tunnel portals & else:]e8 ,a4 ,^! are #h-;in* squ>e metal plates on ! ends ( an*or bolts4 ,! an*or bolts ext5d into ! rock to support ! relatively ?9 out] lay]s ( rock4 ,q4 ,:at are ! :ite m>k+s on ! canyon walls8 ,a4 ,survey control or ref]5ce po9ts :i* h be5 pa9t$ on ! rock4 ,q4 ,:y 0 ! small susp5sion footbridge built8 ,a4 ,m ?an #b ye>s 0 requir$ to build ! ,gl5 ,canyon ,bridge--! highe/ /eel-ar* bridge 9 ! _w4 ,!re=e1 ! footbridge 0 built s work]s c\ld cross ! #abjj-;foot wide canyon2 o!rwise1 x 0 #bjj miles ar\nd by road4 ,,concrete ,,placem5t ,,g5]al ,q4 ,h[ mu* concrete w ! dam conta98 ,a4 ,!re w be m ?an #e1jjj1jjj cubic y>ds ( mass concrete 9 ! dam1 & ab\t #djj1jjj additional cubic y>ds 9 ! p[]h\se1 tunnels1 & o!r /ructures at ! damsite4 ,,aggregate 7,s& & gravel = ! concrete7 ,q4 ,:]e does ! aggregate us$ to make concrete come f8 ,a4 ,f ! /reamb$ ( ,wahweap ,creek1 #f miles f ! damsite4 ,q4 ,is !re a conveyor belt f ! aggregate plant to ! damsite8 ,a4 ,no4 ,! aggregate is haul$ 9 l>ge bottom-dump trucks4 ,,cem5t ,q4 ,h[ mu* cem5t w be ne$$8 ,a4 ,approximately #c million b>rels1 or #ab1jjj1jjj sacks4 ,q4 ,:]e does ! cem5t come f8 ,a4 ,f a new cem5t plant con/ruct$ by ! ,am]ican ,cem5t ,corporation ne> ,cl>kdale1 ,arizona1 #ahh miles s\? ( ! damsite4 ,,pozzolan ,q4 ,:at is pozzolan8 ,a4 ,pozzolan is a cem5t-l mat]ial :i* occurs 9 natural deposits4 ,q4 ,:y is pozzolan us$8 ,a4 ,pozzolan is *eap] ?an cem5t2 x r$uces %r9kage 9 concrete & develops less heat 9 concrete dur+ ! cur+ p]iod4 ,q4 ,:]e is x obta9$8 ,a4 ,ne> ,flag/aff1 ,arizona1 ab\t #aae miles f ! damsite4 ,ab\t #bbj1jjj tons w be us$ along ) #efd1jjj tons 7#c1jjj1jjj b>rels7 ( cem5t4 ,,concrete ,,mix+ ,,plant ,q4 ,:at is capacity ( ! mix+ plant8 ,a4 ,! maximum capacity is #dhj cubic y>ds p] h\r1 :i* is mix$ 9 six1 #d-;cubic y>d concrete mix]s4 ,q4 ,h[ l>ge is ! mix+ plant8 ,a4 ,x is #bag feet1 or m ?an #bj /ories1 9 height4 ,,highl9e ,,cableways ,q4 ,:at w ! highl9es d8 ,a4 ,_! ma9 function is to c>ry ! buckets ( concrete f ! bat* plant to po9ts ( placem5t 9 ! dam & p[]plant4 ,q4 ,:at is ! size & weight ( ! concrete buckets8 ,a4 #ab cubic y>ds4 ,:5 fill$1 ! buckets weigh #ca tons1 #bd tons ( :i* is ! concrete c>ri$ 9 ! buckets4 ,q4 ,h[ l>ge are ! highl9es8 ,a4 ,! high] t[]s are #aij feet tall2 ! ma9 cable is #d in*es 9 diamet] & ab\t #b1jjj feet long4 ,,refrig]ation ,,plant ,q4 ,:y is ! refrig]ation plant necess>y8 ,a4 ,a l>ge am\nt ( heat is produc$ by ! *emical action ( cem5t dur+ ! sett+ ( ! concrete4 ,! heat mu/ be remov$ to prev5t expansion & crack+ ( ! concrete4 ,! refrig]ation plant supplies ! slu% ice & cold wat] necess>y to r$uce ?is heat4 ,q4 ,h[ is ! heat controll$8 ,a4 ,fir/1 ! aggregate is spray$ ) ice wat] be=e go+ into ! mix]s4 ,second1 slu% ice1 along ) wat]1 is us$ 9 mix+ ! concrete4 ,?ird1 cold wat] is pump$ ?r\gh pipes emb$d$ 9 ! concrete to c>ry away ! heat g5]at$4 ,q4 ,h[ long w cold wat] h to be pump$ ?r\gh ! cool+ tubes 9 ! dam8 ,a4 ,approximately #ab days imm$iately foll[+ placem5t ( ! concrete to prev5t uncontroll$ crack+4 ,!n = ab\t #eb days 9 ! second /age1 :i* may be _m mon?s lat] & :i* is = ! purpose ( assur+ uni=m %r9k+ ( ! huge concrete blocks4 ,,concrete ,,blocks ,q4 ,h[ l>ge are ! blocks ( concrete plac$ 9 ! dam8 ,a4 ,!y v>y 9 size4 ,! l>ge/ are #gj feet by #ahj feet 9 area2 all blocks w be #g feet ?ick4 ,q4 ,:y are blocks us$ r ?an build+ ! dam z "o solid piece8 ,a4 ,prim>ily1 block placem5t facilitates cool+ ( ! concrete & controls crack+ due to contraction ( ! concrete4 ,aft] ! blocks h set & cool$1 a mixture ( cem5t & wat] 7call$ gr\t7 is pump$ "u high pressure into cracks betwe5 ! blocks to =m "o solid mass ( concrete4 ,,page1 ,,arizona ,,g5]al ,q4 ,aft] :om 0 ! t[n ( ,page nam$8 ,a4 ,! late ,john ,c4 ,page1 :o s]v$ z ,commission]1 ,bureau ( ,reclamation1 f #aicg to #aidc4 ,q4 ,0 !re a community on ! site ( ,page prior to #aieg8 ,a4 ,no1 no?+ b raw des]t l& l t n[ surr\nd+ ! community4 ,,climate ,q4 ,:at is ! elevation ( ,page8 ,a4 #dcjj feet1 or ab\t #ejj feet high] ?an ! rim ( ! canyon4 ,q4 ,:at are ! extremes ( temp]ature 9 ,page8 ,a4 #aje degrees 9 summ]2 #aj degrees 9 w9t]4 ,,accommodations ,q4 ,does ,page h ov]night accommodations8 ,a4 ,yes1 two mod]n motels are op5 ye> ar\nd4 ,q4 ,are !re any re/aurants8 ,a4 ,yes1 !re are n[ f\r re/aurants 9 ,page4 ,9 addition1 ! contractor's mess hall is op5 to ! public4 ,,dps1 ,utah ,g5]al ,depot1 #e-fa1 #ajj,m ,transcrib]'s ,notes --,sil5tly correct$ a few typos4 --,reta9$ publication in=mation f ! pr9t$ edition3 ?is e,book is public-doma9 9 ! c\ntry ( publication4 --,9 ! text v]sions only1 text 9 italics is delimit$ by und]scores4 --,transcrib$ or tabulat$ "s text )9 illu/rations4