Pennsylvania Grade Crude Oil

[1] The area's Pennsylvania Grade Crude Oil has superior qualities and is free of asphaltic constituents, contains only trace amounts of sulfur and nitrogen, and has excellent characteristics for refining into lubricants.

"[1] There is archaeological evidence that Native Americans harvested "the oil for medicinal purposes by digging small pits around active seeps and lining them with wood" at least as far back as 1410 AD.

[1] European settlers skimmed the "oil from the seeps and using the petroleum as a source of lamp fuel and machinery lubrication.

Pennsylvania grade crude oil when seen in reflected sunlight has a green color and under ultraviolet light looks fluorescent.

"[1] With the success of the first drilled well, in the quiet farming region around Oil Creek towns like Bradford were created and the area was rapidly transformed into the center of the Pennsylvania oil rush in the late 19th century, similar to the growth of gold rush towns of the Wild West.