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The paper presents an algorithm for calculating the natural air distribution in a ventilation network (sub-network) on the basis of following data: - for each network branch: labels of starting and ending nodes, label of the branch, resistance and natural depression; - for each fan: the characteristic in the form of a second order equation and initial flow.

Jan 1, 1977

By C. L. McKenzie, R. A. Heig

The design and operation of metallurgical laboratories is discussed. Laboratory size, general laboratory equipment and metallurgical staffing are discussed from a standpoint of desired laboratory results.

Jan 1, 1986

[Executive J. V. W, REYNDERS, Chairman SYDNEY IL BALL E, DEGOLYER WILLIAM H. BASSETT SAMUEL A. TAYLOR Finance GEORGE D, BARRON, Chairman H. A, GUESS GEORGE OTIS SMITH Membership J. DI, CALLOW, Chairman GEORGE D, BARRON WILBER JUDSON JOHN A. CHURCH, JR. H, N. SPICER Alternates LEWIS W. FRANCIS LOUIS D, HUNTOON F, T. RUBIDGE]

Jan 1, 1928

Jan 1, 1938

Jan 1, 1944

By G. S. Hume

The total production of crude oil in Canada showed only a small improvement in 1936 over 1935, but developments of great importance took place in Alberta on the west flank of the Turner Valley field in the foothills southwest of Calgary. These have led to renewed activity in drilling such as has not been experienced for many years, and undoubtedly this will result in a very considerable increase in the oil production during 1937.

Jan 1, 1937

Jan 1, 1935

By R. J. Pruett, J. Yuan

Kaolin clays from five different commercial deposits in Georgia were studied to understand the variations of zeta potential and related fundamental properties. The results suggest that higher negative zeta potential is related to exchangeable or soluble calcium ions in the clays.

Jan 1, 1999

By J. H. Wright

Longhole sublevel stopes excavate ore with which the production geologist has only remote contact; therefore, predicting grade and tonnage from such a stope can be a problem. However, the longholes themselves yield data that can be used to improve those predictions. Here, a radial distribution method of weighting sample data is discussed, which is useful in forecasting grade and tonnage from certain longhole sublevel stopes.

Jan 1, 1985

John Keith Elers Douglas recently retired from active participation in the activities of the South African Institute of Mining and Metallurgy after over forty years of diligent and valuable service to the Institute. This account of his contributions to the mineral industry and associated organizations is presented as a tribute to all his hard work and dedication. Mineral processing The Fourteenth International Mineral Processing Congress, sponsored by the Canadian Institute of Mining and Metallurgy, is to be held in Toronto from 22nd to 27th October, 1982. The theme of the meeting is 'Worldwide industrial application of mineral technology'.

Jan 1, 1981

After the last world war, management tended to change from an acquired skill more associated with experience than formal training, to a specific widely-recognised specialism requiring an involved formal education process.That process, of necessity, required the development of business schools, M.B.A. courses -indeed the setting up of professional chairs to deal with the intricacy of general management development.Management research burst forth bringing forward new and exciting theories which developed new techniques, tools and terms.

Jan 1, 1985

By Stanley J. Vitton

An important factor to consider during blast damage investigations is whether the structure was constructed on collapsible soils. Traditionally, these soils have been considered to be soils such as loess deposits, which occur along the Mississippi River in locations such as Vicksburg, MS. However, recent research into collapsible soils has indicated that a number of soils may also fall into this category. A collapsible soil is any soil that is susceptible to large decreases in bulk volume upon saturation.

Jan 1, 1997

A review of the motivation of personnel in the open cut mining industry. The effect of social, geographic, environ- mental, organisational, union and other factors on employees' motivation as assessed from job experience and from an attitude survey. An appraisal of where we should be heading and what influence management can have on the motivation of employees.

Jan 1, 1980

By Kelly BJ, Smith GA

The recommendations of a recent American report on "Better contracting for Underground Construction" are considered in relation to Contracting practices on major Australian projects by representatives Of the "classical trilogy" - the Owner, Engineer and Contractor.

Jan 1, 1976

A Modelling Approach Using a Back-Calculated Induction Time to Predict Recoveries in Flotation

Sep 13, 2010

By Geff Gordon, Dale Nies

Small diameter borehole blasting can be very efficient and cost effective. As residential development continues to expand, many areas are now requiring blasting for site preparation and upgrading old utility systems or constructing new ones.

Jan 1, 1990

By Yoshihiro Moriyama, Toshihiro Okitsu, Ryouichi Banno

The fracturing composition using the gas pressure generated by the thermit decomposition reaction gives the following performances.

Jan 1, 1995

By Diehl GW, Kuntonen J

The Tamrock all-hydraulic rock drilling system 400 has been developed to cover as wide a drilling range as possible, from 35 mm holes in tunnelling, roofbolting and development work to 64mm holes in long hole production drilling. Field experience during the last five years shows that the Tamrock drill covers this range in a way that no other rock drill on the market does and recently the range has been success- fully further expanded to cover bench drilling with 76 mm holes.

Jan 1, 1978

By Gordon R. Haworth, J. Terry Aimone

The capital-short mining industry, faced with weak metal markets, will need to devise new and novel methods to finance future expansions.

Jan 9, 1977

By Jeff Yaro, Steven P. Case, Carl Kish

This project involved the construction of a new 4-story library on the campus of Cornell University in Ithaca, New York. The new building was constructed completely below grade, adjoining several of the oldest buildings on the campus. Excepting some surface soil, the job was 100% rock and the excavation had to be completed within a 3-month window.

Jan 1, 1992