miles, coal, area, distance, square, average, worked, contains, north, deposit, latter, distant, upper, Mountains, ocean, commercial, heavy, vicinity, travel, scale, counties, hundred, pits, North, sandstones, ash, lowest, Black, mined, Middle, land, plant, portion, coke, mouth, minerals, regions, sufficient, traffic, reported, track, measures, consist, grate, probable, width, parallel, water, nine