...contain magnetic iron ores; (4) an investigation of the peat resources of Minnesota, in cooperation with the United States Geological Survey and the United States Bureau of Mines ; field work completed December 31, 1915; (5) a relief model of an area including the Twin Cities....

...collected at fresh exposures. In the following tables and discussion, therefore, only analyses made by the United States Geological Survey and the United States Bureau of Mines are considered. The tables include not only analyses of samples from Lee County, but also analyses...

...subjects will be treated more in detail in articles by Mr. Burchard and Mr. Emley shortly to be published by the United States Geological Survey and the United States Bureau of Standards respectively. II. LIMESTONE Limestone is one of our commonest rocks. It is of sedimentary...

...our petroleum from Mexico in 1 92 1 , and alas, Mexican deposits are of the short lived type. "Both the United States Geological Survey and the United States Bureau of Mines agree that we are at the peak of our petroleum production. Twenty years of present output seems optimistic...

...from the mines, cars, and bins. These samples were taken according to standard specifications adopted by the United States Geological Survey and the United States Bureau of Mines. The result of the analyses and tests are given in full in the report. Following the description of...

...from the mines, cars, and bins. These samples were taken according to standard specifications adopted by the United States Geological Survey and the United States Bureau of Mines. The result of the analyses and tests are given in full in the report. Following the description of...

...Testing Plant at the St. Louis Exposition of 1904. Other anaylses are taken from various reports of the United States Geological Survey and the United States Bureau of Mines. Except as noted, all the analyses and heat determinations represent carload lots and were made on samples...

...inspector's office, to be made and used under the same conditions and restrictions as now required by the United States Geological Survey and the United States Bureau of Mines by the persons in charge of mines or mine workings, on or before the thirty-first day of December each...

...The extent of the strike has not been determined. The following tables, taken from publications of the United States Geological Survey and the United States Bureau of Mines, give the statistics of the industry: H IO £! ^ 2 £ x 6 a SJ « 10 as § = 25 I! 31 § •; ° -S...

...collected at fresh exposures. In the following tables and discussion, therefore, only analyses made by the United States Geological Survey and the United States Bureau of Mines are considered. The tables include only a few analyses of samples from Buchanan County 'itself, as...