November 10, 2026
May the Flux Be With You!
Tuesday, November 10, 2026
7 pm
This month’s program will explore the many uses of limestone in the production of iron at charcoal-fueled furnaces like Cornwall, as well as the important role this common Pennsylvania rock has played in other industries and everyday life. The presentation is the final installment of a four-part series in which Mike has examined the raw materials used in charcoal iron furnaces and the primary solid waste product they produced - slag.
A long time ago, in a charcoal-fueled furnace near you… join us to discover the fascinating story of limestone and its role in Pennsylvania's iron industry.
The presenter, Michael Weber, volunteers as a guide, researcher, and lecturer at Cornwall Iron Furnace. As a 1982 Geosciences graduate from Penn State, Mike worked for 36 years as a geologist, health physicist, and manager for the U.S. Nuclear Regulatory Commission and the U.S. Geological Survey. After retiring from Federal service, he returned to Cornwall Furnace, where he serves as a guide and researches the history of mining and the geology at Cornwall and similar deposits in PA. He is the author of Always More Production, a history of the mining operations at Cornwall.
This in-person and online lecture will utilize the Zoom platform. Registration is required for online attendance only.
To register for the virtual lecture, please go to: h[ps://us02web.zoom.us/webinar/register/WN_LyYtIA6PQu-MGE7juKTNzQ The presentation is offered at no cost to attendees, but donations are greatly appreciated.
