Hopewell (on Hammer Creek in Lancaster County, Pennsylvania) is where Peter Grubb, who founded Cornwall, Pennsylvania in 1737, first began his iron making activities about 1739. It is an area about six miles southeast of Cornwall, in Lancaster County. Grubb built two forges on Hammer Creek, called the Upper and Lower Hopewell Forges, to complement his Cornwall Iron Furnace that began operation in 1742.
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