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Jan 1, 1938

G. A. ROUSH,* South Bethlehem, Pa. (written discussion?).-Mr. Frey is correct in his impression that ice floats, but "frazil" ice happens to be the exception to the rule. The requirements for the formation of

Jan 12, 1919

Jan 1, 1915

By J. L. Carne

Careful sampling is necessary to maintain sulphide-oxide ratio of open-pit and underground ores.

Jan 6, 1951

By Leon W. Dupuy

SUPPLEMENT THESE tables should accompany Figs 6, 7, 8, 9 and 10, respectively. To follow Fig 6: TABLE 2[a]-Drill Rod [ ] To follow Fig 7: TABLE 3-Rod Coupling [ ]

Jan 1, 1947

Jan 1, 1898

Jan 1, 1941

Jan 1, 1938

Jan 1, 1915

Jan 1, 1951

Jan 1, 1944

Jan 1, 1946

(Under this heading will be published notes sent to the Secretary of the Institute by members or other persons introduced by members.) Member, aged 34, married, technical graduate, 10 years' experience as mining engineer and mine superintendent, desires position. Can show low cost records and good references. No. 176.

Jan 1, 1916

The attached tables show that in 1935 production of crude oil in Poland slightly decreased (minus 14,450 tons) and that gas production

Jan 1, 1936

Jan 1, 1940

Jan 1, 1940

Jan 1, 1914

Jan 1, 1931

Jan 1, 1896