Railroads particularly interested in handling of crushed stone, which represents considerable volume of traffic; United States produced crushed stone aggregating 68,000,000 tons in 1924, 75,000,000 tons in 1925, and 82,000,000 tons in 1926; approximately 66 per cent of total stone production of country; railroad ballast between 18 and 20 per cent annually of total production of crushed stone.
Crushed stone industry's value to transportation
Cement, Mill Quarry
Cement, Mill and Quarry ; 32 , n 8
1928
3 pages
Aufsatz (Zeitschrift)
Englisch
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The crushed stone industry; Its value to transportation
Engineering Index Backfile | 1928
|Standard sizes of crushed stone
Engineering Index Backfile | 1927
|Research in national crushed stone association laboratory
Engineering Index Backfile | 1932
|Utilization of crushed stone in low cost roads
Engineering Index Backfile | 1929
|Indiana crushed-stone plants rebuilt to meet present specifications
Engineering Index Backfile | 1933