National Geographic : 1932 Jul
Photograph by Charles M. Smyth TRANSFERRING FREIGHT WITH TOPSY-TURVY MACHINERY At Salida, where the broad-gauge system of the Denver and Rio Grande Western Railway meets its narrow-gauge lines, this device has been erected to transfer ore from little cars to big ones. The small car is run into the open-work drum, where it is made fast and then rotated. The ore is thus dumped into the waiting standard-size car below. A greater mileage of narrow-gauge railways exists in Colorado than in any other State in the Union (see text, page 47). photograph hbyK.f.Lucas TUNNELING FOR GOLD IN THE HEART OF AMOUNTAIN Hundreds of miles of suchtunnels have been gouged from the solid rock of Colorado's mighty ridgessince John Gregory discovered the first vein of gold on Clear Creek, in 1859. Inthe early days amine was considered a big business enterprise if ithandled ahundred tons of ore aday. Now some Colorado mines run 500to1,000 tons through their mills, but the ore is of low value and the precious metal extracted isfrequently only afew dollars a ton (see, also, text,page 22).