By 1835, seven or eight major mines were operating in the Midlothian area.

The following major mine was active in the area of Abbottsfield.

Most of the major private mines had worked normally.

The following is a list of the major mines, all of which are now closed.

Two major mines employ more than 400 workers.

The following major mine was active in area of Beverly Heights.

By 1915 there were two major mines in the area, and the population was in excess of 500.

This was in 1785 and by then the major mines were so deep that a ladder climb to the surface could take an hour.

Segrazlin arrived with his personal assistant and the owners of the major mines to be involved.

There are no major mines, roads, hydro, or logging areas in the region.