sentences:  Oil was also found in parts of Washington Township, including a well that was thought to be "the most phenomenal well ever drilled in America".By 1896, Blackford County had 18 natural gas companies, headquartered in all four of the county's townships, including the communities of Hartford City, Montpelier, Roll, Dunkirk, Trenton (Priam Post Office), and Millgrove.In June 1880, only 171 people held manufacturing jobs in Blackford County.