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KAMY is the leading manufacturer of roadheaders in the weight class of 13-100 tons weight. Our roadheaders offer interchangeable cutter heads, both transverse and axial and are custom engraved for each project. Our hydraulic cutters are suitable for material with uniaxial compressive strength ranging from 500 to 25,000 pounds per square inch. All of our products can be utilized in a variety of applications from rock excavation, trenching, demolition and concrete, to underwater cutting, tunneling, and scaling.
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Tunnels on the Pacific Railroad - cprr.org
The Union Pacific Railroad was built, and its location revised, under the direction of S. B. Reed, Engineer and Super intendent of Construction. The accounts of tunnels 1 and 2 are from personal observation, and of tunnels 3 and 4 from data furnished by Edward P. North, Resident Engineer of work in Weber Cañon.
List of tunnels in California - Wikipedia
Bridges and Tunnels on the Transcontinental Railroad. The successful design of bridges, ... Instead of using steam power to dig its tunnels, the Central Pacific Railroad relied on the muscle of men wielding hammers and chisels to make the holes into which blasting powder was packed.
Tunnels & Bridges - The Transcontinental Railroad
7/22/2012 · Exploring the abandoned rail tunnels (and snowsheds) constructed by the Central Pacific Railroad in 1868 over Donner Pass in the Sierra Nevadas. This was built as part of the original ...
History of the Union Pacific Railroad - Wikipedia
2/21/2007 · See THREE parts of this long Canadian Pacific Railway train at once as it pushes upgrade through the Lower Spiral Tunnel in Yoho National Park, British Columbia, Canada, just East of Field.
Donner Rail Tunnels - YouTube
Railroad tunnels, also known bores, are an expensive but somtimes necessary means to keep grades low across mountain ranges. The first such structure was the Staple Bend Tunnel of 1834.
CPR Spiral Tunnel 3 parts of same train at once in shot ...
Gillis, John R. Tunnels of the Pacific Railroad. Van Nostrand's Eclectic Engineering Magazine, Vol. II, 1870 pp. 418-423. New! Examples of Pottery Used in 19th century CPRR Chinese Worker Camps **"Nameless Builders of the Transcontinental Railroad" by William F. Chew, 2004. Mr.
Railroad Tunnels - American-Rails.com
Railroad Engineering Records: Bridges & Tunnels. This page presents records and firsts for railroad tunnels, bridges, and stations in the U.S. and worldwide. ... The highest railroad bridge in the USA is the Pit River Bridge on the Union Pacific Railroad at Shasta Lake, California. The cantilever bridge carries a highway and two tracks over ...
CHINESE-AMERICAN CONTRIBUTION TO TRANSCONTINENTAL …
By 1865, the Central Pacific Railroad was concentrating its workforce on building a series of tunnels to cross the summit of the Sierra Nevada Mountains. Between the tunnels, mountain slopes provided ample surface for tracks, but the extreme weather at the highest elevations impeded progress.