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Books Books 1 - 8 of 8 on ... 90 per cent less than 2.1 millimeters. No particle shall be more than 5 millimeters....
" ... 90 per cent less than 2.1 millimeters. No particle shall be more than 5 millimeters in diameter, and the sand shall be passed through screens or sieves of such mesh as to stop all such particles, and no screen or sieve shall be used containing at... "
Bulletin - United States Geological Survey - Page 398
by Geological Survey (U.S.) - 1910
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Purification of the Washington Water Supply

United States. Congress. Senate. Committee on the District of Columbia, James McMillan - Washington (D.C.) - 1903 - 303 pages
...least ninety per cent less than two and one-tenth millimeters. No particle shall be more than five millimeters in diameter, and the sand shall be passed...of such mesh as to stop all such particles, and no screen or sieve shall be used containing at any point holes or passages allowing grains larger than...
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Public Documents of Massachusetts, Volume 4

Massachusetts - 1904
...ninety (90) percent, less than two and one-tenth (2.1) millimeters. No particles shall be more than five (5) millimeters in diameter and the sand shall be...of such mesh as to stop all such particles, and no screen or sieve shall be used containing at any point holes or passages allowing grains larger than...
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Water Purification

Joseph Wilton Ellms - Water - 1917 - 485 pages
...per cent. less than two and ten hundredths (2.10) millimeters. No particle shall be more than five (5) millimeters in diameter, and the sand shall be passed through screens and sieves of such mesh as to stop all such particles, and no screen shall be used containing at any...
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Bulletin - Geological Survey, Issue 37

Geology - 1921
...541, 1892. 2 Stone, R. WT, Mineral resources of the United States for 1913, pt. 2, pp. 336-337, 1914. diameter, and the sand shall be passed through screens...of such mesh as to stop all such particles, and no screen or sieve shall be used containing at any point holes or passages allowing grains larger than...
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Preliminary Report on the Sand and Gravel Deposits of Georgia

Livingston Pierson Teas - Gravel - 1921 - 392 pages
...physical properties of sands and gravels: Massachusetts State Board of Health Rent., p. 541, 1892. 90 91 diameter, and the sand shall be passed through screens or sieves of such mesh aa to stop all such particles, and no screen or sieve shall be used containing at any point holes or...
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Gravel and Sand Deposits of Eastern Maryland: Adjacent to ..., Issue 906

Nelson Horatio Darton - Gravel - 1939 - 42 pages
...70 percent less than 0.83 millimeter and at least 90 percent less than 2.1 millimeters. No particle shall be more than 5 millimeters in diameter, and the sand shall be passed through sieves of such mesh as to stop all such particles, and no screen or sieve shall be used containing...
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Mineral Resources of the United States, Part 2, Issue 1

Mineral industries - 1914
...at least 70 per cent less than 0.83 and at least 90 per cent less than 2.1 millimeters. No particle shall be more than 5 millimeters in diameter, and...of such mesh as to stop all such particles, and no screen or sieve shall be used containing at any point holes or passages allowing grains larger than...
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Annual Report of the State Board of Health of ..., Volume 35; Volumes 1902-1903

Massachusetts. State Board of Health - Public health - 1904
...(90) per cent, less than two and one-tenth (2.1) millimeters. No particles shall be more than five (5) millimeters in diameter and the sand shall be...of such mesh as to stop all such particles, and no screen or sieve shall be used containing at any point holes or passages allowing grains larger than...
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