Rensselaer Republican, Volume 16, Number 3, Rensselaer, Jasper County, 27 September 1883 — Rock Excavating. [ARTICLE]

Rock Excavating.

The fastest rock excavating ever done was at Factoryville, Pa., in the Delaware, Lackawanna and Western railroad tunnel, which is 2,200 feet

long and 16x20 in diameter. The herding was driven through 7x16 feet, working two faces, in five months and ten flays. The contractors claim that this beats any previous work by 200 feet. The greatest distance driven in one month was 502 feet.—New York Sun