BETHLEHEM MINES & BEYOND

Despite the numerous changes in ownership, the coal mines in and around Heilwood retained the Penn Mary name until 1921, when all of the mines became known as Bethlehem Mines. This name continued until 1936, at which point the Bethlehem Mines Corporation was dissolved and a new company was formed - Industrial Collieries Corporation.

Industrial Collieries managed the mines until 1940, when the operation was leased to the Redlands Coal Company, a subsidiary of J.H. Weaver Company of Philadelphia - the very group that had opened the first Heilwood mines in 1904. This lease arrangement continued until 1943, at which point the Redlands Coal Company purchased the mines from Bethlehem Steel. It was during this time period that the Monroe Coal Company (another subsidiary of the J.H. Weaver Company), acting as a real estate agency, began selling the houses and lots to the residents of Heilwood.

The Redlands Coal Company continued to run the mines until 1948, when they sold them back to Bethlehem Steel, which operated them for another year before selling them to the Pine Township Coal Company. The Pine Township Coal Company continued to operate the mines until 1959, when the final remaining mine was closed for good.

Safety manuals from the Redlands Coal Company (1942) and Pine Township Coal Company (1956).