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65. Ore Deposits at Butte, Montana
By Gordon B. Brox, Joseph F. Mcaleer, Charles C. Goddard, Edward P. Shea, Robert G. Ingersoll, Lester G. Zeihen, George J. Burns, John M. Guilbert, Richard N. Miller, Charles Meyer
The Boulder batholith is a composite intrusive in which the Butte quartz monzonite is the dominant rock type. Quartz porphyry dikes intruded the quartz monzonite in directions which were subsequently
Jan 1, 1968
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66. The Coeur d'Alene District, Idaho
By Verne C. Fryklund, S. Warren Hobbs
The Coeur d'Alene district in the panhandle of Idaho is one of the major lead-zinc-silver producing areas in the world. The value of recorded production to date has exceeded $2 billion. Country rock c
Jan 1, 1968
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67. The Homestake Mine
By A. L. Slaughter
The Homestake mine, located in western South Dakota, was discovered in 1876. The first reported production was in I 878. Total production through 1965 is 6,554,249 troy ounces of silver and 27,961,276
Jan 1, 1968
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68. The Metaline District, Washington
By Roy A. Anderson, Roger H. McConnel
The Metaline district from 1906 through 1965 has produced nearly 16 million tons of ore yielding 400,808 tons of zinc and 178,062 tons of lead. The sediments, ranging from Precambrian into the Devonia
Jan 1, 1968
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69. Ore Deposits of the Republic Mining District, Ferry County, Washington
By Roy P. Full, Robert M. Grantham
Regional structural adjustments in early Tertiary time resulted in the development of the Republic graben, a major down-dropped block that is from 6 to 10 miles in width and more than fifty miles in l
Jan 1, 1968
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7-Foot Diameter Drilled Shafts In Weathered Rock: Design, Load Testing, And Construction
By Aly M. Mohammad
The design of large diameter drilled shafts in weathered rock has always presented a challenge to the foundation engineers. Degree of weathering and load transfer mechanism through the rock are essent
Jan 1, 2003
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7. Mineral Exploration and Development in Maine
By Robert S. Young
During the last quarter-century, exploration for metallic deposits in Maine has been sporadic with peaks generally coinciding with periods of high metal prices. Known cases of regional or semi-regiona
Jan 1, 1968
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70-Foot-Deep Sheet Pile Cofferdams Driven by the Press-In Piling Method
By Takayuki Sakai, Takefumi Takuma, Lee Roesner
"70-foot deep rectangular-shaped bulkheads were built with sheet piles as launching and receiving shafts for a pipe jacking operation for new underground waterlines in a densely populated section of L
Jan 1, 2016
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700 bar hydrogen cylinder design, testing and certification
By M. Duncan
Lightweight, high-pressure cylinders for compressed hydrogen storage are essential components for fuel cell vehicles. Storage volume and mass are two key considerations. Current on-board hydrogen stor
Jan 1, 2005
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71 Minerals Ltd. – Tombstone, Arizona
Although the 71 Minerals operation is now closed down and the operating data presented is almost five years old, it is well worth describing since it was the first heap leaching operation conducted on
Jan 1, 1981
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73rd Street TARP Relocation McCook Cup Reservoir: Contract 97-156-2H
By Brent Duncan, Doug Harding, Bob Stier
The 73rd Street Tunnel Project is part of “The Tunnel and Reservoir Plan” (TARP)also known as the Deep Tunnel Project, and is located in the Village of Bedford Park, County of McCook, State of Illinoi
Jan 1, 2003
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75. Cardera Mine, Opalite Mining District
By Elwin L. Fisk
The Cordero mine is located in the Nevada portion of the Opalite Mining district that straddles the Oregon-Nevada state boundary. The mercury deposits of the district occur along the margins of the br
Jan 1, 1968
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75th Anniversary Celebration Marks All-Time High in AIME Meetings
By AIME
IN the parlance of Hollywood, it was a super-colossal meeting. In the more restrained language of engineers, the Institute's 75th Anniversary Celebration attracted the largest crowd ever; was the
Jan 1, 1947
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77. The Gabbs Magnesite-Brucite Deposit, Dye County, Nevada
By John H. Schilling
The Gabbs magnesite-brucite deposit is unique in size and is one of two magnesite deposits being exploited in the United States. It is near the town of Gabbs, which is one hundred miles southeast of R
Jan 1, 1968
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78. New Idria Mining District
By Robert K. Linn
The New ldria Mining District is in the southern part of the Diablo mountains of the California Coast Range, 140 miles southeast of San Francisco. The district, noted primarily for quicksilver, also h
Jan 1, 1968
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8. Titaniferous Ores of the Sanford Lake District, New York
By Stanford O. Grodd
The Sanford Lake district encompasses an area covering 24 square miles in the central Adirondack Mountains of northern New York State. Discovery of the titaniferous magnetite deposits dates back to 18
Jan 1, 1968
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802.11 Wireless Site Survey Methodologies in an Underground Mine Environment
By Mark G. Lafontaine
Underground 802.11 wireless communications has become widely adopted for automation and communication purposes but maximizing the wireless signal presents many obstacles given the harsh environment as
May 1, 2013
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82. Changes and Developments in Concepts of Ore Genesis - 1933 to 1967
By John D. Ridge
Here are summarized 162 papers, published between 1933 and 1967, that deal with various aspects of ore genesis. Emphasis is placed on additions to, or modifications of, ore-formation theory, no matter
Jan 1, 1968
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9. Ore Deposits of the Southern Appalachians
By Robert A. Laurence
Ore deposits in the Southern Appalachians are ( 1) sedimentary or syngenetic, ( 2) epigenetic, and ( 3) residual. In general, deposits characteristic of high temperature and pressure are found in the
Jan 1, 1968
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[Halliburton / Brown & Root Report] - Brown & Root Civil - GeoJet Foundation System - I. Introduction
By Gordon] [Reavis
Halliburton Services and Brown & Root have developed a unique foundation system that blends oilfield and construction technologies to construct deep foundations which offer significant advantages acro
Jan 1, 1993