Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Jon M. White"'
Publikováno v:
Coal Preparation. 6:181-193
High pressure waterjets attack, fragment and comminute coal. The purpose of this research is to determine the effect of selected waterjet parameters on the specific energy required to create particles less than 75 μm in size. The selected parameters
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53b375416f9f57a3864fbb6e1e0aaa02
https://doi.org/10.1080/07349348908960528
https://doi.org/10.1080/07349348908960528
Autor:
Jon M. White
Publikováno v:
International Journal of Coal Geology. 6:139-147
Precise measurements of 54 deformed tree trunks within the subbituminous Wyodak coal seem in northeastern Wyoming were made at eight locations in surface mines along the outcrop north and south of Gillette. Theory of elasticity applied to the individ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b338533258dcfb3da5373a350b6c57dc
https://doi.org/10.1016/0166-5162(86)90017-0
https://doi.org/10.1016/0166-5162(86)90017-0
Autor:
Jon M. White, Marian Mazurkiewicz
Publikováno v:
Mining Science and Technology. 9:181-185
Oriented specimens of bituminous coal were obtained from a strip mine near Moberly, Missouri, U.S.A. and were sawed and machined into cubes 1.5 in on the side oriented such that the bedding was parallel to one set of faces. The cubes were loaded to f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::893b65318024f6e3469d6bcdd8694dbe
https://doi.org/10.1016/s0167-9031(89)90272-7
https://doi.org/10.1016/s0167-9031(89)90272-7
Publikováno v:
Synthetic Communications. 18:2349-2352
A conyenient and rapid method for preparing aryldiazo-methanes from the related tosylhydrazones employing phase transfer catalysis with hydrocarbon solvents in good to excellent yields has been developed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a957b9b2384f93f87a22f2124015ea99
https://doi.org/10.1080/00397918808082380
https://doi.org/10.1080/00397918808082380
Autor:
Richard A. Farrow, Jon M. White
Publikováno v:
Environmental & Engineering Geoscience. :385-388
Precise leveling surveys and ground and aerial inspections were conducted to determine the nature and practical effects of surface subsidence due to consolidation of reclaimed spoils at the Rosebud Mine, Colstrip, Montana. In spoils 30 to 40 yr old,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07aa5ccdd5afa714ac08969397e25882
https://doi.org/10.2113/gseegeosci.xix.4.385
https://doi.org/10.2113/gseegeosci.xix.4.385
Publikováno v:
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts. 15:179-182
The in-situ stresses at Eisenhower Memorial Tunnel, Colorado were measured by the overcoring stress relief method. The tunnel bears east-west and penetrates the ridge of the continental divide, which locally trends n 20 e. The stresses are: (1) 900 p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbd735e40a8bf1024ac2f0d547ea1c45
https://doi.org/10.1016/0148-9062(78)91224-x
https://doi.org/10.1016/0148-9062(78)91224-x
Autor:
Marian Mazurkiewicz, Jon M. White
Publikováno v:
Environmental & Engineering Geoscience. :249-256
Subsurface coal fires in the Northern Great Plains region render the overlying land useless by sterilizing the soil and by causing highly irregular subsidence. Hot gases and glowing particles emitted from the subsurface fires cause a significant dang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b1572431c4d52604cc0bbc88d1efc40
https://doi.org/10.2113/gseegeosci.xxv.2.249
https://doi.org/10.2113/gseegeosci.xxv.2.249
Autor:
Jon M. White
Publikováno v:
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts. 17:129-130
Cylindrical samples of coal 2.22 cm in diameter were tested in a Tinius-Olsen testing machine using various confining pressures. Stress-strain curves were developed for a range of confining pressures (3.4 to 102.0 MPa). The axial stress at failure wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a403b6e5a3a0dfff03c4ac9141c36e74
https://doi.org/10.1016/0148-9062(80)90264-8
https://doi.org/10.1016/0148-9062(80)90264-8