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Show I "Move Over!" Says Dam Builder to River I X s i "7 """ rsr -v I xe NT o X x o NN Hvv L , , m, v k. in H i .nil.,' , i u n ' -jyngwiwWMtwIKtMlt NNN r x XNX n n xVnWvx s s i x xxx s Wn tx, j fe,....- v. ... ...x.t... ...... ............. ..s ..... ....v..........o.y..A.-...A..v.se.. ,-, ;-. w i.y"-, .fny.v.W....e.v.-.ttj..i1aj, , " v.-,. . i Slj-...i;-Al Shifting around America's second-largest river is one of the most difficult problems connected witli con- ! struction of the Grand Coulee dam on the Columbia river in Washington, which on completion will be the larg-! larg-! est masonry construction in the world. Picture shows gigantic bulkheads which close off slots in the Bf' section of the dam, forcing the river to move over and flow through similar passageways left in the ' tral section. . y f |