A

Acid Mine Drainage

Acid Mine Water

Acid Precipitation

Acidic Rocks

Acid Testing

Active Workings

Adit

Advance

Aerial Magnetometer

Aerial Survey

Aeromagnetic Survey

Ag (Silver)

Agglomerate/Agglomeration

Agitation

Air Blast

Air Split

Allocated gold

Alloy

Alluvial gold

Alteration

Amalgam/Amalgamation

Amorphous

Amortization

Angle-of-Dip

Annual Report

Anomaly

Anticline/Antiform

Apex

Approved Refiner

Assay

Assay Foot

Assay Map

Assessment Work

Au (Gold)

Auriferous

Autoclave

Autogenous Grinding

Auxiliary Operations