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Full Access to Technical Paper
Mine hoist braking systems
Mine hoist brakes must meet the following statutory performance criteria:
There should be two independent braking systems; at least one should act directly on the hoist drum.
If one brake fails, the others should be able to retard and stop the hoist safely before the descending conveyance, carrying the rated load, reaches any obstruction.
When all brakes apply, decelerations should not be so violent that men travelling in the conveyance are injured.
The brakes shall...
L.C. GALLOWAY, G.L. TILEY
Mine hoists, Braking systems, Thermal capacity, Testing, Mine safety, Emergency.
Bonus and accidents: is there a link?
An analysis of the number of industrial injuries shows that the mining sector is particularly affected, since mining is one of the most dangerous industrial activities in Canada. This has led to numerous inquiries, and supports the need for an in-depth study aiming at the identification of factors responsible for these accidents. One possible factor often pointed at is the small crews incentives and this paper presents a scientific approach applied to check a potential link between bonus and...
JEAN-LUC CHOUINARD, NOEL BILLETTE
Safety, Human resources, Bonus, Accidents, Severity rate, Mining industry
Radon emanation rate studies: inter-laboratory standard reference materials and the...
Radon emanation rates, J, and compositions of materials from the Canadian Certified Reference Materials Project (CCRMP) indicate that the fraction of the Rn produced that escapes, E, is usually 1% to 8% and the 23SU decay chain is nearly in secular equilibrium. For some Chinese ore standards, E values are higher than for the CCRMP materials. Standard ore tailings have 21°Pb concentrations higher than expected from their 226Ra concentrations and Rn escape rates (12 - 34%). Biological...
Attenuation measurements of ear muffs at Falconbridge Limited, Canadian Nickel...
At the Falconbridge Limited, Canadian Nickel Division, Sudbury Operations, we investigated the "NO NOISE" ear muffs model NN3-F which is a Swedish product with foam-filled sealing rings (the Hellberg Standard Volume Hearing Protector). It is used extensively at Falconbridge mines in Sudbury.
The research which was carried out in the four Falconbridge mines was conducted under three different headings: manufacturer's attenuation data (psychophysical method), clamping force and head...
Mine safety, Attenuation, Ear muffs, Noise, Clamping force, Head size, Falconbridge Limited.
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