Classicly

The following extract from 'Wanderings in West Africa,' a book which I wrote in 1862 and published (anonymously) in 1863, will best explain the reasons which lately sent me to Western Africa:—

In several countries, for instance, Dinkira, Tueful, Wásá (Wassaw), and especially Akim, the hill-region lying north of Accra, the people are still active in digging gold. The pits, varying from two to three feet in diameter, and from twelve to fifty deep (eighty feet is the extreme), are often so near the roads that loss of life has been the result. 'Shoring up' being little known, the miners are not unfrequently buried alive.

The stuff is drawn up by ropes in clay pots, or calabashes, and thus a workman at the bottom widens the pit to a pyriform shape; tunnelling, however, is unknown. The excavated earth is carried down to be washed. Besides sinking these holes, they pan in the beds of rivers, and in places collect quartz, which is roughly pounded.