Joplin Globe from Joplin, Missouri • Page 31

A Picture Story of Progress on Table Rock Dam Construction Br l.EF. A. 1EW. C.Vo»» Thr first phase of of thr first multiple-purpose dam to Yf built in Missouri is neannc completion, wiih workers at the JSS 700 000 ROCK dam project The White i near Branson i to divert the over iiio a nrvv. man-made channel -The dam which i i create the largest of in Missouri 'Lake of the Oarks larger 1 will have a rhorelinf of 857 miles, and i he P(l miles Jons Water from the dam he backed up into Barry.

Stone counties in M.ssoun into and Boone coun- Arkansas Approximately Durine the construction period nlanmng wo'-k is being cont-nued. under the of engineers of the army necessary land is, being obtained and contracts are being awarded for other elements of the oxer-all project sui as construc- a total of 200 000 of power the dam is Other contrails arf bcirii. iff for tne of OIK rating ma- ch.npry and equipment for the and powerhouse crrrti.xi of the diiced pover lines road proj- ficial corps of engineers guide all crecauuons have been taken to insure the stability and perman-' of the dam structure He said' 'everal holes each 48 inches were bored into the bed-, and geologists were loweredj on cabies into the holes to the types of rock strata tried to m-ure stability He said ilso that the Moatinc woald insure the presence of taves under the structure and would fill crevices encountered i Construction a begun i the Ki Idmg of the left embankment of iiie dam. an earth trurture ex- Jhe dam i-- scheduled for cornplf. on in Imal n-m- plction date of the profit is a and 20 cent A-- which can be finished only after the dam itself completed, such as the installation of control machinery and the Completion of landscap.ng and beautifying the damsile The Iirst construction of the dam.

wliich has been in proc since November, has Thr diverting of mrr. from 1 aec-old channel into new channel." mark ihej the While as it has! iv i-th of the loncreie portion of ll ie dam The embankment, which partially completed, lilt of earth excavated from a sitm'od upstream in an prca to be covered hv the lake i The embankment, win.h will be nrotected on the lake side stow "np-rap." to euard against cor- action of the a o5 the iske. also will serve the sub- crade for a jhat will run Progress being made on Table Rock dam across White river near Branson. Mo is giaomcaln illustrated in the aoove photo- graohs wh-cfi show various phases of the construction activ 'ty at dam site A 43JOO-acre will much of the area shown in photograph No. 1 when the dam is picture, taken trom thi.

south side of the dam looking upstream, shows a pait of the White which will be inundated by the o' the rese-voir In the foreground can be seen part of an earth cofferdam, bu'lt to protect the construction site from water, and to be used to divert the course of the river into a new channel when work 's ready to begin on the portion of the dam which will occupy the present bed of the river In photograph 2. an aenal -new of the entire project can be seen with the cofferdams show-n plainly the renter. In the upper left of the picture can be seen portom of shaoed left embankment of the dam of earth construction uhicn be used to supplement the concrete section of the dam and wiJI oe as a sub-grade for a highway passing the da-n. In the foreground can be seen part of the concrete plant, wnich mxes Concrete for the construction work and a portion of the finished dam can be seen in the center of the picture. In The foreground are towers mounted on railway tracks, which support the cable-car system used to carry concrete to the dam.

Pnotopaph No 1 shows a portion of the dam itself and the foundation of tne power plant which w-ll be built in conj'unrbon with the dam. In the foreground is ihe diversion channel m'o which the river will be diverted by the cofferdams when the present channel is blocked The dam begins to take shape shown in photograph No. 4 the "monoliths huge concrete sections Rich comprise the mam portion of the dam. are poured Eignt sections of ihe dam are shown this photograph while in the background be "Jeen a ponjon of monolith 15 uhich also is pictured photograph No 3 The highest monolith 60 feet high, is only about one-fourth completed In front of the monoliths can be seen a portion of tne impervious earth fill which will be placed in front of the loncrete cam This fill composed of alternate layers of stone sand and soil acts as a filter for water preventing 100 p-essure binldme up against ihe dam, or undermining the through underground channels An of how the dam will be is gained from pho'o- grapn No 5 which shows the monoliths as seen from the south side of the The final elevation of the completed dam will be 10 feet hicher than the elevation at which this, photofrraph was or approMmatelv 261 feet from the mer bed No 6 is looking dnectly airoas the river in the line t'lf w.Jl take and shows the ru'-ve of the earth The tall tower shown the background is one of the sjppom for the cable system The tower is feet and i- by heavy cables. Imbedded in concrete bkxks or men In the sevens pnotojoaijh a load of concrete, weighing 16 tons bi re dun.ped into a fonii on one of the monolith-, of the dam Tiff cm larryins the concrete, has a capacity of eight cubic dumped hv means of an air hose at- bv wo-Vcr on ihe form All ihe ionciete used the dam will be lo the forms by means of these Pboior- No shows the "keyway" rt :h.e -Gutn side of ihe into which the will be built The IOD of the dam will 30 feet above the top of the i show-n in the oicture At the far left is the concrete mixing plant.

suppl.es crncrete to darr The building js approximately snti Poh f- loperation the cable system is kept tional facilities including fishing 24-hour-a-day ooeration At boatinir. camping and other sports the entire project IN associated with a large oody of ir.ated with giant searchlights, to water enable to see anywhere in About 95 per cent of ihe time jflie pioject without the aid of ad ihe Table Rock lake will fluctuate 'd'lional illuminating in a bS-fout zone, called the power AcLOi-ding to the t-orps drawdown storage between rr-cr- the first studies for A ddm elevations uf 8-16 ind 913 feet The nl Tnble Rock were made in 1H1J i TIM; into nood- and ega.n in 19JI by the cunu-ol poui at 931 feet and ater Compapy Tlie for approximatelx weeks A is.te studied 5 one and one-half car on the olf.cidlb sid. duwni.ue.in! from the bul those penod i for site. ner a high i-' 1 months in some years and nut rook from the i.i-oie«r uiher veaii, de- intiives name Ku- Jher tudie- Jt-nding upim rainfaJJ lAirm- made at MR major flci-ds the reservoir may 19.M and bv hc Empire rea tlevdtn.ii and during trii! Het.n-ic Company t-Mrinie druugtit may recede to However "'cvaiion M6 or lower represent- no Jv Co- a range in pcvl elevation of r--- i-, a bill fc-ct and ause changes r- 'or of d-m ST TM o' surface and rcmon.e- from 55 000 to 16.000 acre-Jeet. vere hrJd in (X-tohtr CJal Proxisioivs been made for Msitors at the damsite The dam is a mijor of for in than lhc m.lc dam when thr -Jie rabie hy hooks The then river ys 'xl into its it strvam-hed hf caiw nd Ir The are of con- 1O fon71 vjicr lh 3nd cnl So ld A w-orker at- mount 2iVe an 'o the ihe Ihe dumnwi Thr rn- fcr! At the dam special observ anon booth has been built for the con- enience of spectators From booth, i is situated on The north side of the ruer, can ee the entire construction operation including the emoankments, monoliths and tne cement plant as well other facilities Display ed rs are not permitted in the const! iiclion area without tpecai permission.

however, and isitLT hrfv been amed stay onJv areas designated as sale for spectators Oflicials point out tfvi 'he denser from rock slides dm! usher fauors precludes the ptnm'lmj; of tourists on th" dam or near eauipmcni Used bv the contractors At 'ne antage point. iaire Mf.nhiir'rd displays a ske.rh of the completed (Jam. and a pictorial history of dam 10 date, as well data on the con- jvtrtiction anc of the 3a-n and 9C-- loplin Globr. Sundax, August 28, naaral lo 1nrr1 sneaTi and io a Thf comh nauon to protrrt the wwkints Irom fanh and cowrr constnic- 1 TnTT tjon N-ing from the 1 Thr PTVI of tnr 5 of and mil rxtend for 3H urtivilv also marts ahove ihc fonndat.on the Jiv rod of much of thr 01V conslnidinc i 1 thr siyr oT Tahle RocV. After digcmc 'h" cnre irrnch cnrrfim: anr.v who workers MJrd ihf hcd- of ihe proif' rorK with crmrnt, to rliminate an pre.Murr.

and cause walT 'o ex- of thr them, undermining Cornpanx. Inr dam Ttah ConsJfiJctHn Com-i wrrr drilled into ihe i- Th" rw-o Timns cir" trrnch for a of from SO Afi-m a and 'o "300 Tee: and "croat a cement thci- mi1irre. Jorcrd into 'he holes and personnel to im- hrriMmc Uw dam aP'l watrr-hfar- mhTh wnil hr 42o "Hf under lhr "1 over-all, at thr fof, "grouting chancr 1 f2 'ool-long structure brine forced under 'h" "W.WH elixir of'oarn. Mid comptetfd ir, 1558 Areorrting 10 1 Rork ih of amnv will FlntHl embankment for ihe plans do rail for laV" to rxlcnd to height of this MrucniiT part of the first jbas" of constnictxwi of the dam hrcn the hrgmnini: of construction on the monol'lhs huge 1 v.fiirh wj 1 unit of ib" contan all of th" ig which diveri mio the crnTaimt: plant Th" al-o bf-ar ot lh" mass of tva- 1er compnong thf lake 26 1 of utiirh 1 through and monoliih JT hav bwn 1 throiich will fofn the north svjp or the div motv id' of comprise Mnirnire the anrt 'he Tailing of 5he hoM the concrete in place Th? 'o lift ih- forms to mononlh and li't-s thr forms from -nonohih bcnralh jJ For No moToljih 1hr crsnr placed on It "mhaikmcnt krpt ai ihe same level as monolifn No 1h--nch ihf Tiire of js rrjght 10 the lith forms by ai ffmf-rt from on a hluff at the of 1 ihe liihs oti the sid" of nver The cement is in ran. which a -ay of mhi nih'r of ron- or 16 rai-h- IS control from a contixil the cement plant.

The means of isdio. is toJd 10 cm. and vxhrn 10 raise or lower i' to enable tl-r workfrs 10 make ar-hose connrction Alo in tcnvr is a rt. which thr opc-raj-nr of the 3. corps of 'n of 'he rhiel of rn- of ihe ITI of Kran-wi 15 Table Rock Dam Statistics STOK W.K K.QI (DKITH ICHFS OF RAPT THK OF I.

Vin -in ST 1hf Tne 113 of 4 is Hood ronijnl to thr VJHITU-- ensr.nrers mih the Table Rork iidine flood more Shan 1 OOP Of0 8I Nn AVhit" I brtvvern Tahle F.r^k I.TIM I OF 5MOREUF. and Finl jnrhidmc lhr I and r-rrcational Jaol t-- HI OFF ran 1 OT1 lhp to To an to 'np- tlw-Owk the first case of in ofnriais said it bfcji 1T jn rtam of the 1 fl or I'M 00ft 4 bnns: MKA SK4 I.K\Kr. The Kui: a l- of a brwirs. an of.