Congressional Edition Volume 4505

Congressional Edition Volume 4505

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 edition. Excerpt: ...Taff. A general reconnaissance of the clay resources of the United States east of the Mississippi River has been made by Ries, and his report is now in press. Detailed studies of particular dexosits have been made by Vaughan in Georgia and Florida, and by various geologists in connection with their areal mapping. Important economic work has also been done underthe section of p reCambrian geology, especially upon the iron ores of the Lake Superior region. Alios the iron-bearing districts have been studied by Van Hise and his assistants, Clements, Bayley, and Leith, and reports are either published or in press. Also under the supervision of Van Hise the lead and zinc mines of the Mississippi Valley have been examined in the Ozark region by Bain, Adams, and Tangier Smith, and in western Kentucky by Ulrich and Tangier Smith. GOLD AISTI) SILVER. In addition to the papers here included, whicli represent the results of recent work by the Survey in important precious metal milling districts, oilier reports bearing incidentally on the subject of gold and silver will be found under the head of "Copper," on pages 105 to 18(i. PROGRESS REPORT ON THE PARK CITY MINING DISTRICT, UTAH.'1 INTRODUCTION. Field ivork.--During the field season of 1901 two detailed topographic maps of portions of the Park City district, were prepared by this Survey under the direction of E. M. Douglas, geographer in charge, by Pearson Chapman and J. F. McBeth. The general map, showing an area of approximately ', i'2$ square miles on the scale of li inches to 1 mile, embraces the general area in Park City through which mining operations have been conducted; and the other, on a scale of 1 inch to 1,000 feet, or 5.2 inches to a mile, includes only that portion of this...show more

Product details

  • Paperback | 378 pages
  • 189 x 246 x 20mm | 671g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236570006
  • 9781236570000