TECHNOLOGY

Underground plugger punches above its weight

A HIGH speed and high impact underground mining plugging device that protects workers and machinery from being hit by abandoned drill rods can handle weight thousands of times its own but is still light enough to hold with one hand, according to inventor Leigh Sutton.

 Inventor Leigh Sutton holding his spear

Inventor Leigh Sutton holding his spear

Developed by local Bendigo company Rattlejack, the SafetySpear can plug an underground safety gap and solve a safety issue that has never had a reliable remedy. Sutton, a director of Rattlejack, said...

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