Bulk Sampling & Audit
Bulk sampling & audit
service for placer gold operations
service for placer gold operations
Macon Industries and it’s affiliated metallurgical laboratory can help with greenfield sample assay, bulk sampling and benchmarking performance of existing operations.
Green Field: Bulk Sampling
The bulk sampling process aims at evaluating the recoverable gold content of a deposit. A large sample volume ensures representative results.
STEP 1
Multiple bulk samples are collected from strategic locations around the deposit. 
STEP 2
Samples are processed through a test plant such as Macon’s T150. 
STEP 3
Concentrate and tailings cuts are submitted to Macon for size-by-size analysis and bulk-gravity fire assays. All gold values are returned to the customer. 
STEP 4
A detailed report is provided specifying sample characteristics and suggested washplant scale-up criteria. Recovery Audit (for mines in operation)
The Macon Recovery Audit aims at determining actual recovery rates at production scale. Accurate tailings and concentrate analytics uncover how gold is recovered and provide guidance for improvement.
Download Procedure overview
STEP 1
A sample of 1000+ tons of material is processed. Washplant audits are offered for Macon and non-Macon washplants. Audits are done over one day with minimal to no interruption of gold production. 
STEP 2
While material is processed through the washplant, a Macon designer collects the required samples for subsequent analysis.
STEP 3
Concentrate and tailings cuts are submitted to Macon for size-by-size analysis and bulk-gravity fire assays. All gold values are returned to the customer.
STEP 4
A detailed report provides information about gold recovery by particle size and explains improvement opportunities
What Our Customers Say
We have one of the largest wash plants in the Klondike. It is 30 years old and after seeing the success other miners are have with various Macon wash plants we decided to buy the SD-600 from Macon to replace it.
It was an easy acquisition process with Matt and Jeff answering every question we had quickly and exactly.
The new plant arrived on time and at the price quoted. Jeff and his installation team set the plant up at our location and stayed with us until we were comfortable with the operation.
The SD-600 has exceeded our expectations. It is a heavy duty quality machine. The plant is so efficient in water and electrical usage that we have downsized the pump and generator with very considerable fuel cost savings and still maintained our output.
After installation service has been exceptional. Jeff is in constant contact and readily solved all our issues. We highly recommend Macon and their wash plants.
It was an easy acquisition process with Matt and Jeff answering every question we had quickly and exactly.
The new plant arrived on time and at the price quoted. Jeff and his installation team set the plant up at our location and stayed with us until we were comfortable with the operation.
The SD-600 has exceeded our expectations. It is a heavy duty quality machine. The plant is so efficient in water and electrical usage that we have downsized the pump and generator with very considerable fuel cost savings and still maintained our output.
After installation service has been exceptional. Jeff is in constant contact and readily solved all our issues. We highly recommend Macon and their wash plants.
Dean Russell, President
Dominion Gold Resources Ltd.
Dawson City, Yukon
Dominion Gold Resources Ltd.
Dawson City, Yukon
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Macon Industries Inc. is committed to providing the highest level of customer service to ensure you have the solution where you need it.