SBM mining equipment: crusher machine and grinder machine

Significant Points

Significant Points

Employment is projected to decline in all sectors except coal mining.

While many mining jobs can be entered directly from high school, a considerable amount of job training and experience is needed before workers can perform most duties; some employers prefer graduates of high school or postsecondary programs in mining or mine technology.

Earnings are higher than the average for all industries.

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Geology

The mine lies within the Narracoota Volcanics, a stratigraphic unit that hosts DeGrussa, Conductor 1 and the Conductor 4 deposits. Spread over a strike length of 22km, Narracoota Volcanics is a 2km-thick sequence of volcano-sedimentary rocks.It hosts 150ppm copper compared to 50ppm copper content normally found in volcanic rocks.

The mine is a typical vocalnogenic massive sulphide (VMS)-style deposit in terms of mineralisation, chemistry and regional structure. It occurs as lenses of polymetallic massive sulphide developed in submarine volcanic environments from metal-enriched fluids related with hydrothermal convection of the seabed.

The DeGrussa deposit represents a 20m-thick steeply dipping to almost vertical body of high grade copper-gold mineralization with zinc and silver hosted in lesser amounts. The deposit is defined over a 180m lateral strike extent and extends to a known vertical depth of more than 300m.

"The mine has been drilled extensively since discovery.

The Conductor 1 deposit is hosted as a number of stacked lenses instead of one lens, as suggested by geological modelling. Underlying the DeGrussa deposit, the Conductor 1 deposit measures 15m in thickness and extends over a lateral strike length of 350m. It is characterised by a steep 75 south-west trending dip and has a known vertical depth of 400m.The newly discovered Conductor 4 deposit lies 120m below the Conductor 1 deposit. Intersected 200m east of Conductor 1 and DeGrussa, this deposit is a smaller massive sulphide lode.

Mineralisation

Mineralisation at Doolgunna is hosted within sulphide-bearing quartz veins, oriented subvertically within mafic schists. The mineral bearing bodies remain open to the west.

Exploration and drilling

The mine has been drilled extensively since discovery. More than 100 diamond drill holes were completed by mid 2009. To establish the orientation and limits of mineralization hosted at DeGrussa and Conductor 1, major airborne electromagnetic (EM) surveys have also been carried out. The EM surveys have identified up to 17 conductive features and targets for further exploration.

In 2010, approximately $20m has been directed towards regional exploration intended to target priority versatile time domain electromagnetic (VTEM) anomalies.SBM mining equipment introduce: crusher machine and grinder machine.

SBM mining equipment: crusher machine and grinder machine

By: tony

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