Two years of preparatory work in South America have yielded specialist engineering company Horne an order for an emergency fall arresting system (EFAS) valued at R1,4 million. This is Horne’s first order from the continent and a significant milestone for a company which has for some years been preparing mining markets in Argentina, Chile and Peru to receive its South African developed products. The order was placed by mining group Minera Aurifera Retamas for the San Andres gold mine, Peru’s largest. Emergency arresting systems are required by law in Peru.
EFAS is a dual-purpose product delivering a safe stop to a mine cage in free fall, as well as the standard chairing function needed at mineshaft stations. Under failed rope conditions, a valve on the EFAS hydraulic accumulator automatically opens to force hydraulic fluid under regulated pressure from the accumulator to the system clamps, activating them and bringing the cage to a safe halt. The accumulator recharges to full pressure each time the cage is stopped at a shaft station.
Three features make EFAS unique. Firstly, careful regulation of emergency hydraulic fluid release allows the cage to decelerate without injury to a human load as the stop is controlled. Secondly, the system works equally safely on both wooden and steel shaft guides. No other system in the world can effect a controlled cage deceleration on the steel guides currently replacing wooden equivalents in modern mines. Thirdly, EFAS has been formally tested and proven in working mine environments.
Horne will effect delivery in October this year, with commissioning expected to follow early in 2014.
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