Douglas: In 1869 Jonas J. Pierce purchased 50 acres of land in the southwest suburb of Sharpsville on the line of the E. & P. R. R. In 1870 the firm of Pierce and Kelly was organized and Furnace No. 1 was built with a stack 50 feet high and a 11 foot bosh. It was put in blast in March 1871.

In 1872 General Pierce and his son Wallace, obtained an interest in the firm which then became Pierce, Kelly and Company Stack No. 2 was erected in 1872, with stack 50 feet high and a 15 foot bosh and put in blast in February 1873. These were rebuilt and enlarged in 1879 and in 1881.  

Mabel: This furnace was formerly known as the Ormsby Furnace, being built by J. W. Ormsby and Sons. No. 1 was built in 1873 and No. 2 in 1880.

Spearman Furnaces: Built and operated by Spearman Iron Company which was organized by J. J. Spearman who also superintended the erection of the furnaces. They were built in 1872. No. 1 was blown in January 15, 1873, No. 2, September 15, 1875.

W. P. Snyder of Pittsburgh bought all three of them and later incorporated the Shenango Furnace Company in 1906. Stack No. 1, which had been on the site of the Douglas, was torn down in 1970. Stack No. 4 was torn down in 1924. Stack No. 3 stands on the site of the old Spearman Furnace. At this moment [in 1974]  it is doubtful if No. 3 will ever operate again. For the first time in over 125 years, Sharpsville will be without an operable blast furnace.

Sharpsville Centennial Commemorative Booklet, 1974, page 28 

Shenango Furnace 1907

Click to enlarge

Shenango Workers 

abt 1918 - 1922

Shenango Furnace Workers 1929