Yes that is it.
A shaft 60cm x 1 mtr x 3 mtr deep takes around 80 - 90 buckets. To make it easier to get down to where the gold is the shafts are oval shaped. This takes about 75 buckets.
Once at 3 meters the dirt starts going through a trommel to be washed. There are about another 25 buckets before you hit the bedrock, each bucket will have about a match head of gold or maybe more. I will also go slightly into the sides at this depth for another 25 buckets and hopefully get around 1 -2 ounces for my work.
Also a windlass on top to get the buckets out makes it easier on the back.
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