After the war, wells were drilled at Burning Springs, Oil Rock, California House, Volcano, Sandhill and Horseneck, and in the years1865-18763,000,000 bbls.
A successful well in Marion county, near Mannington, far from the region of the earlier wells, was drilled in 1889, and the output of the state increased from 119,448 bbls.
After 1900 it gradually decreased - although new pools in Wetzel county were found in 1902 - and in 1908 it was 9,523,176 bbls.
Brine wells have been mentioned above; the salt industry is still carried on in Mason county, and in 1908 145,157 bbls.
As the result of these developments, the value of the oil product increased from $ 2 77, 1 35 (54 6, 0 7 0 bbls.) in 1898, to $871,996 (836,039 bbls.) in 1900; to $4,174,731 (18,083,658 bbls.) in 1902; and to $10,410,865 (12,322,696 bbls.) in 1907; it decreased to $6,700,708 (11,206,464 bbls.) in 1908.