Through-the-deck blast-hole sampler

Details Through-the-deck blast-hole sampler Through-the-deck blast-hole sampler

1997-08-29

1999-04-13

Raevis, Robert

Measuring and testing

Sampler, sample handling, etc.

Capture device

152576, G01N 112

Patent

active

058940960

ABSTRACT:
The present invention involves a sampler designed to collect drill cuttings which are produced during drilling of a blast hole in open-pit mining operations. The present invention is designed to capture a theoretically accurate sample which will be assayed for the gold and silver it contains (and may be appropriate for other minerals as well). The present invention obtains a larger, more representative sample and has the ability to split the sample automatically to a reasonable lab delivery weight. The design of the invention provides for sampling through the drill deck of drill machines which are commonly used in open-pit mining operations. The design of the invention allows for sampling over the entire particle trajectory and is unaffected by changes in drilling equipment. The sampler comprises a pan which is tapered and receives drill cuttings produced from drilling a blast hole. The sampler may also comprise a rear arm which is pivotally connected near the back wall of the pan, and a front arm which is pivotally connected to the pan at a location farther from the back wall of the pan relative to the rear arm.

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