MINING CONDITIONS UNDER CITY OF SCRANTON, PA.
People's Coal Co.—Continued.
OXFORD COLLIERY—Continued.
General conditions.
21 acres mined. Depth, see sections on Plate 17; thickness, 1 foot of coal, 2 feet of rock, 2£ feet of coal; rock and top bench taken down for height in roads; chambers, 30 feet; pillars, 18 to 20 feet; openings well filled with gob; fairly successful attempt made to columnize the pillars in the Dun-more beds.
73 acres mined. Depth, see sections on Plate 17; thickness, about 4£ feet, with 6 inches of refuse; roof taken down for roads, and rooms well packed with gob; pillars fairly well columnized.
62 acres mined. Depth, see sections on Plate 17; thickness, about 4 feet 10 inches, with If feet of refuse; recently mined, and pillars fairly well columnized; rooms filled with gob, except in roadways.
Mining conditions under school properties.
Depth, 516 feet; mined under northeast and southeast side, but major part solid; chambers well filled with gob, and mining stopped.
Depth, 481 feet; not mined.
Name of school.
No. 14..
No. 16..
No 14	.... Depth, 567 feet; heading and airway under central and eastern part
of building; western part of building over solid coal; recently mined; chambers well filled with gob.
No. 16........... Depth, 502 feet; not mined under school lot; mined from east side of
Chestnut Street westward.
No. 14........... Depth, 620 feet; gangway and airway under central and eastern part
of building; western comer on solid coal; recently mined.
No. 16........... Depth, 568 feet; mined from westward only, up to line of school lot;
,	not mined under the lot; mining stopped here.
Coal beds.
Dunmore No. 1.
Dunmore No. 2..
Dunmore No.