Skip to main content
Conference Proceedings

Rock Breaking Equipment and Techniques, Melbourne

Conference Proceedings

Rock Breaking Equipment and Techniques, Melbourne

PDF Add to cart

Production Blasting Practice at Hamersley Iron Pty. Limited

Primary production blasting at Hamers- ley Iron began with seven inch holes at Tom Price in 1966 and has developed since then to large multiple row shots of 381 mm holes at Tom Price and 311 mm at Paraburdoo. Up to 1.3 million tonnes are initiated in a single blast with the average around 300,000 tonnes. Development can be traced through Anfo, AlAnfo, slurries, various boosters, initiation and delay techniques, hole loading and daily operating practices. A standard practice could be developed for the two mines for normal pro- duction blasts; this would not apply to such common variations as low "paddy" shots, pre- splitting, tight corners necessitating single row drilling etc. Because of ground variation three or even four sizes of drill holes may well be economic- al for blasting, even though this would be off set by complications in operation, supervision, store stocking and maintenance, particularly in Drilling.
Return to parent product
  • Production Blasting Practice at Hamersley Iron Pty. Limited
    PDF
    This product is exclusive to Digital library subscription
  • Production Blasting Practice at Hamersley Iron Pty. Limited
    PDF
    Normal price $22.00
    Member price from $0.00
    Add to cart

    Fees above are GST inclusive

PD Hours
Approved activity
  • Published: 1978
  • PDF Size: 0.61 Mb.
  • Unique ID: P197802019

Our site uses cookies

We use these to improve your browser experience. By continuing to use the website you agree to the use of cookies.