Copyright: 4 Original photography - WesternMiningHistory.com
Description: This old mining machine was on display in downtown Park City. The plaque reads:
Historic Mechanical Engineering Landmark
Eimco Rocker Shovel Loader, Model 12B
Patented October 25, 1938
This machine represents the first successful device to replace human labor in removing the rubble resulting from blasting in underground hard-rock mines. It was operated entirely by compressed air. As the loader moved forward, its bucket dug into the rubble. When full the bucket lifted and with a snap, threw the rubble rearward into a mine car for removal.
The loader designed by Edwin Burt Royale and John Spence Finlay, was developed, manufactured, and sold internationally by Eimco Corporation, Salt Lake City.
The American Society of Mechanical Engineers - 2000.