And because it was already so busy, prospectors began to look for other minerals, and by the end of the nineteenth century, lead, copper, manganese and arsenic were added to the cargos leaving Manham.

由于这个港口已经十分繁忙了，勘探者便开始寻找其他矿物，到十九世纪末，铅、铜、锰和砷都被开采了出来，成为了Manham对外输出的货物之一。