There are many reasons for conveyor failure, but regular inspection and subsequent planned preventive maintenance is always far more efficient and less costly than
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The original Vertical Shaft Impactor
The story of the Barmac VSI dates back to the late 1960s when New Zealander, Jim Macdonald, was promoted to the role of street
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What is involved in the tyre retreading process?
The first element of tyre retreading involves the casing preparation and the first element of this involves an inspection of the tyres.
Initial inspection of
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How long will these chains last?
Tyre protection chains were first used in the 1950s. As mechanised earthmoving equipment developed, demands by quarrymen and miners for higher productivity meant larger
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Maintaining safety critical systems
It is vital that safety critical systems on mobile equipment are properly maintained, to ensure the safety of operators. Last year, the NSW Department
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Little known hero
Darren Flanagan is employed by Johnson Hi-Tech Explosives in Nowra. He is their Sales Manager for the east-coast of Australia. He received a phone
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The fine art of precision drilling
On a mountain top, high above the Black Hills of South Dakota in the United States, work continues on the Crazy Horse Memorial –
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Measuring blast-generated vibration
It is said that in the 1960s quarry managers who received complaints about vibration from blasting would visit the complainant immediately before a blast,
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Addressing face stability
It is imperative for owners of existing and redundant quarries to ensure that these are geotechnically stable. Owners and managers are taking, or will
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Stemming plugs improve blasting, productivity
Typically, the loss of explosive energy through stemming ejection reduces the performance of the blast. The fundamental theory promoting the use of stemming enhancement
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