Farm tin

Farm tin or the tin dues was one of a number of payments required of tin miners in Devon and Cornwall. The holder of a mining sett was required to pay a portion of the black tin extracted to the holder of the tin bounds in which the sett was granted. The portion was the "farm tin". The portion was normally interpreted to be one-twelfth of extracted tin: they were also required to play toll tin, calculated at one fifteenth.

This keyword could refer to multiple things. Here are some suggestions: