This term is sufficiently wide to include all contiguous and connected veins and seams of coal which are worked as one concern, without regard to the closes or pieces of ground under which they are car-rled, and apparently also the engines and machinery In such contiguous and connected veins. MacSwln. Mines, 25. See Carey ▼. Bright, 58 Pa. 85
Source: Black's Law Dictionary 2nd Ed (1910)
