The East Broad Top Archives will host a special lecture on the geology of Broad Top Mountain on Saturday, June 14.

Clifford H. Dodge, retired Senior Geologist of the Pennsylvania Geological Survey, will present at the Broad Top Area Coal Miners Museum, 704 S. Main St., Robertsdale.

Dodge says, “The structurally complex, isolated Broad Top coalfield consists of Pennsylvanian-age sedimentary rocks containing several commercial, low-volatile bituminous coals. “Remarkably, despite a general understanding of the coalfield since the work of James H. Gardner (in 1913), the detailed areal geology has not been well studied or clarified until now.”

Dodge will share the new comprehensive study that the Pennsylvania Geological Survey (PAGS) started in 2017 which reveals “newly recognized or redefined mappable bedrock mappable bedrock geologic units in Broad Top.” The “identified coals and geologic units of the Great Trough Creek syncline (basin) in the East Broad Top field, where the mines of the Rockhill Iron and Coal Company operated, will be briefly discussed.”

At the Friends of the East Broad Top Museum, 570 S. Main St., Robertsdale, a new exhibit, “Drill to the Core: In Search of Broad Top Mountain Coal,” gives a brief glimpse into the geology that makes up Broad Top Mountain, the use of bore hole drilling that produced core samples for the EBT, and the Hoffman Brothers Drilling Company, through related drawings and artifacts found in the EBT Foundation and Friends of the East Broad Top’s remarkable collections.

The exhibit opened May 3 and runs until the end of the year.