Boston Colliery was opened by the Boston Coal Company in 1857. The next year, Boston became a property of Delaware, Lackawanna and Western Railroad. Delaware & Hudson Canal Co. (later just Delaware & Hudson Co.) acquired Boston Colliery in 1880 and operated it successfully for several decades. The Boston breaker was abandoned in 1908 and coal was take out through D&H's nearby Plymouth No. 5 breaker. The Boston Colliery breaker was demolished in 1909. It was now considered part of Plymouth No. 5 operations. The "Boston section" of Plymouth No. 5 was last mentioned in state mine records in 1915.
A malicious individual set fire to a stack of mine timber props being stored in the Boston mine on May 10, 1911. This resulted in the death of five miners.
Two shafts (one for coal, one for ventilation) were sunk in 1882 by operators Cowan and Dinniny. A breaker was built and, on September 3, 1883, coal was first shipped to market from Schooley Colliery. Butler Coal Co. was listed in state mine records as Schooley's operator in 1885. From 1886 until 1888, Nelson Cowan operated Schooley. A firm listed at times as Butler Mine Co. Ltd., Butler Colliery Co., and Butler Coal Co. became the new operator in 1889. They also owned other nearby coal mines. Butler successfully mined several veins of anthracite coal until 1896-97. That is when Pennsylvania Coal Co. took over Schooley Colliery. Disaster struck on May 8, 1889 when the Red Ash vein workings suffered an inundation from the Susquehanna River. This was followed by an underground cave-in at Schooley that was bad enough to affect the surface, causing a trolley to derail and damage to a house. Valiant efforts to save the mine went on well into June. For many years after that, PA mine records were silent on Schooley Colliery except for a mention in 1918 that a boiler house had been upgraded and blacksmith shop, bath house, and forman's office had been erected. So, it is possible that Pennsylvania Coal Co. was still mining Schooley coal reserves in the early 20th century and sending the coal to another breaker. Schooley coal production returned to state mine reports in 1939 as being operated by Saporito Coal Co. That particular annual report states that Schooley had previously been operated by Schooley Coal Co. However, there is little to know about that company. During this time, Schooley was reported to be a "run of mine" operation that shipped unprocessed coal, perhaps to another breaker for final preparation and shiment. Saporito continued to mine Schooley Colliery on a lease from Pennsylvania Coal Co. until 1943. Carlo Saporito was an associate of local mafioso Stefano La Torre. The next company to operate Schooley on the same lease was also mobbed-up: Knox Coal Co. Under Knox, Schooley suffered a gas explosion on April 10, 1947 that caused the death of ten workmen. Knox continued to mine Schooley coal and send the coal to their other breakers in the area until the same company's River Slope Mine pushed the envelope on how close they could mine under the Susquehanna River and caused the inundation of the local mines in an event that came to be known as the Knox Mine Disaster.