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Mining Operations & Strategies

Suppliers Report

For more than 30 years, the Hilliard Corp. has supplied braking systems for draglines, electric shovels, conveyors, mine hoists and mills. Now, the New York, USA-based company is set to unveil new...
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Mining Equipment Gallery

Marcotte Mining has completed development of an ultra-high scissor lift that the company said exceeds standard underground capabilities. Designed to provide a safe work platform for installation of...

New Cat Hammers Retain Popular Features

Caterpillar has added three models to the E Series Hammer line—H140Es, H160Es and H180Es—for use on medium and large excavators ranging from its 324E to the 374D L.

The energy classes of the H140Es, H160Es and H18Es are 6,000 ft-lb (8,135 J), 8,500 ft-lb (11,525 J) and 12,000 ft-lb (16,270 J), respectively. The E Series Hammers build on the proven D Series Hammers, which the new hammers replace. E Series Hammers feature a new symmetrical housing design, which allows rotating the housing 180° to compensate for wear. The lower portion incorporates rock edges that add protection to the housing and enable quick positioning of boulders. An optional wear package is available to improve hammer durability in severe applications. Features carried over from the D Series include automatic shut-off, which instantly stops the hammer when the tool breaks through material. The system increases hammer reliability and durability by eliminating high internal stresses created by blank firing. Another feature continued in each E Series Hammer is the external pressure control valve, which reduces service time when an adjustment is necessary. The E Series Hammers are designed to be field serviceable with common hand tools. Sound suppression is standard for environmental protection and operator comfort. The new hammers’ settings are preprogrammed in Cat excavator tool control systems for easy set up. Oil flow and pressure are fully adjustable in the tool control program, and actual hammer working hours can be recorded for routine maintenance purposes.

From the Editor

This month, E&MJ offers an in-depth report on Newmont Mining Corp. When gold prices started to decline, the company began to optimize operations and sell assets. Lowering operating costs allowed it to invest in operations during the downturn and now they are reaping the rewards.
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This Month in Coal Mining

An official for India’s state-owned producer Coal India Ltd. (CIL) revealed that 66 of its 123 most costly projects are facing some kind of delay as the country eyes a target of 20 billion metric...