Joel Spivak is involved in several activities in October 2017. He is a founding member of the Dumpster Divers of Philadelphia. https://dumpsterdivers.org/
● About US
The SIA’s emphasis on archeology reflects a concern for the tangible evidence of early industry. Our mission is the study, interpretation, and preservation of the surviving factories, machinery, bridges, canals, industrial communities and artifacts that are historically significant.
OLIVER EVANS CHAPTER 
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