In addition to its quarrying operations, Holmes Extractive Resources provides transport services, equipment hire services and road construction. It is a family owned and operated business that has been trading in the northern NSW region for several decades.
Holmes obtained its first Kleemann machine, a Mobicat MC 120 Z tracked jaw crusher, in July, after an exhaustive selection process. Manager David Holmes said the MC 120 Z was available ex-stock to Australia and could be delivered quickly.
Clovass quarry, located outside Casino, produces high grade aggregates for infrastructure projects and the concrete industries in northern NSW and southeast Queensland. The materials in the quarry include an overburden and ?bluestone? basalt resources in sizes of up to 500mm. The feed materials receive basic pre-processing including removal (and breakdown) of pieces larger than five to 600mm in size.
Material is fed into the Mobicat MC 120 Z at rates of up to 350 tonnes per hour, where the machine processes the material into two products.
The Mobicat MC 120 Z is a mobile jaw crusher with a large independent double-deck pre-screen, six-metre side conveyor, and full electronic/hydraulic controls.
The jaw is a robust 1200mm x 800mm (48? x 32?) opening and can process materials at rates up to 350 tonnes per hour.
Normally, an MC 120 Z has a closed side setting of between 80mm and 160mm. Holmes Extractive Resources has a requirement for gabion products of up to 250mm, so a special toggle plate was fitted to the MC 120 Z to allow production of this product.
Holmes? MC 120 Z is operated with a large triple-deck screen to produce up to four different graded aggregate products.
Source: Wirtgen Australia Pty Ltd