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By M. B. Ramachandra Rao

THE occurrence of copper ores at Garimenapenta, 14° 59 min 30 sec N Lat., 79° 33 min 10 sec E Long., in Nellore district, Madras State, India, has been examined and investigated on numerous occasions during the past two centuries.1 No tangible orebody was ever located as a result of all the ex-

Jan 4, 1953

By G. Rinelli, A. M. Marabini, V. Alesse

Salicylaldehyde, a chelating agent for tin, has been found to function as a collector for the flotation of cassiterite. Infrared and nuclear magnetic resonance studies clearly show that salicylaldehyde can form a chelate compound in bulk and at the surface. Results are also given for the flotation of a tin ore with this reagent.

Jan 1, 1976

By William N. Page

HAVING recently made a careful professional examination of this tract, I think its peculiar geographical, topographical and geological relations may prove interesting to members, not only because they are somewhat unusual in such a combination, but also as presenting the economical conditions of a region not widely known, at the western base of the Alleghanies.

Jan 1, 1889

By J de Cuyper, G. Rinelli, A. M. Marabini, V. Alesse, W. Freyberger

Salicylaldehyde, a chelating agent for tin, has been found to function as a collector for the flotation of cassiterite. Infrared and nuclear magnetic resonance studies clearly show that salicylaldehyde can form a chelate compound in bulk and at the surface. Results are also given for the flotation of a tin ore with this reagent.

Jan 1, 1976

By J. Chupak, D. J. Salley, G. L. Simard

Radiotracers were demonstrated to be of considerable value in a study of the interaction of dithiophosphate with galena. The interaction had characteristics of both chemisorption and chemical reaction, being complex because of the nature of the galena surface. Sorption was rapid and markedly reversible, and flotation occurred at relatively small amounts of dithiophosphate sorbed.

Jan 3, 1950

By Hyung-woo Kim

This paper concerns about steering characteristics of pilot mining robot, named MineRo II, crawling on extremely cohesive soft soil using dynamic simulation software. The MineRo-II for deep-seabed manganese nodules, which aims at the use for pilot mining test, was manufactured in 1/5 scale of commercial mining capacity (see Fig. 1).

Sep 14, 2011

By Tyler Acorn, Tristan Worsey

A dozer operator at a surface gold mine accidentally drove a D10 off the side of a highwall. The blade of the dozer caught on the lip of a catch bench 60 ft. (18.3 m), down stopping its descent. The operator scrambled to safety in fear that the dozer would not hold.

Jan 1, 2014

By S. S. Peng

This paper presents a convenient way for the preliminary design of the shield supports. The locus equations which are applicable for all kids of shield supports are derived. These equations facilitate the statics analysis of the shields. An indirect method in determining the coefficient of friction, the external toads and their locations are also developed.

Jan 1, 1982

By C Robert Scott

Yes - We have figures on Explosives Manufacturers ! But, on the 500 or 600 explosives contractors, unless you happen to specialize in shooting oil wells, we have no numbers. As you know, the Insurance Industry lives on numbers, the larger the better. They collect the amount of premiums and losses on each line of insurance they write.

Jan 1, 1980

By W. K. Brisden

The SAG Milling Seminar, which was held at Murdoch University in Perth on 30th November and 1st December, 1989, was a very successful technical seminar. Organizer Dr Norm Stockton reported a total attendance of 130, which was higher than the 70 expected: 20 delegates came from the eastern States and the remainder were from Western Australia.

Jan 1, 1990

By P. T. Wedepohl

The youngest technical programme committee of The South African Institute of Mining and Metallurgy- that on Physical Metallurgy - held its second colloquium on 18th September, 1984. The topic of 'Corrosion of Piping and Tubing in the Mining Industry' was very appropriate since the date had been chosen to coincide with that of the Electra Mining Exhibition.

Jan 1, 1985

By Allen H. Gipson

Innovative thinking has led to the development of safe, environmentally sound, and cost effective methods for expanding existing tailings storage facilities (TSF). Three case histories are discussed here to demonstrate methods that have recently been used or are being considered for such expansions. Maintaining the integrity of the structure and reducing costs were primary goals in each case.

Jan 1, 1997

ASSETS CAPITAL ASSETS Equity in United Engineering Society's Land and Buildings $486,792 79 Library 40,000 00 $526,792 79 INVESTMENTS Jas Douglas Fund-Schedule #2 $ 99,966 40 Life Membership Fund-Schedule #3 9,415 63 R W Hunt Medal Fund-Schedule #4 7,489 09 116,871 12 INVENTORIES Paper Account .305 10

Jan 1, 1923

By F. C. Harvey

The Annual General Meeting of the Orange Free State Branch was held on Wednesday evening, 30th July, 1986, in the VIP Lounge of the Freegold North Region Canteen. The meeting was well attended, a total of 73 members, guests, and visitors being present. It was extremely pleasing to have such a large number of lady visitors present.

Jan 1, 1986

By Steven L. Crouch

The 'doorstopper' technique for determining the state of stress in rock requires that the stress concentration factors at the flat end of a borehole be known. Published values of these factors are widely variant. An axisymmetric finite element analysis of this problem has been made, yielding elastic stress concentration factors for different values of Poisson's ratio.

By Jack Eloranta

To improve control of blasting, tests were performed to assess non-electric cap accuracy. Simultaneous testing using a Velocity of Detonation Recorder (VODR), Red Lake LoCam and an Instantel DS-677 blast monitor was done. Favorable comparisons were found in the three records. This testing confirmed the accuracy of an inexpensive and expedient cap testing procedure.

Jan 1, 1992

Plans are now being made for the formation of the American Meteorological Society, which has for its object the advancement and diffusion of the knowledge of meteorology and climatology said the broadening of their applications in public health, agriculture engineering, industry and commerce. Information regarding the society may be obtained from Charles F. Brooks, Weather Bureau, Washington, D. C.

Jan 12, 1919

By Calvin J. Konya

For proper blast design, one must make the assumption that all blastholes release nearly ideal energy. In many types of blasting operations, blastholes release very little useful energy. These blastholes are called malfunctioning blastholes. Recent studies indicate that as many as 30 percent of all blastholes are malfunctioning. These malfunctioning blastholes are not an unusual occurrence.

Jan 1, 1988

[ASSETS CAPITAL ASSETS: Equity in United Engineering Society's Land and Buildings $486,792.79 Library 40,000.00 $526,792.79 INVESTMENTS: Jas. Douglas Fund-Schedule #2 $ 99,966.40 Life Membership Fund-Schedule #3 9,415.63 R. W. Hunt Medal Fund-Schedule #4 7,489.09 116,871.12 INVENTORIES: Paper Account 305.10] [ ]

Jan 1, 1925

EASTERN VENEZUELA PETROLEUM Established December 15, 1954 Meets fourth Thursday each month at Chepa's Ice House in Anaco Glenn N Murchey, Chairman Jerome C Kearby, First Vice-Chairman J L Thompson, Second Vice-Chairman Thomas G Wall, Treasurer G J Clarke, Secretary Mene Grande Oil Co Apartado 3974 Caracas, Venezuela S K Wilkie, '58, Section Delegate

Jan 1, 1957