Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
historical industry
|
| gptkbp:contributedTo |
gptkb:American_Revolution
|
| gptkbp:declinedAfter |
late 19th century
|
| https://www.w3.org/2000/01/rdf-schema#label |
Pennsylvania iron industry
|
| gptkbp:location |
gptkb:Pennsylvania
|
| gptkbp:notableCompany |
gptkb:Bethlehem_Steel
|
| gptkbp:notablePerson |
gptkb:Robert_Coleman
gptkb:Peter_Grubb |
| gptkbp:notableProduct |
wrought iron
cast iron pig iron |
| gptkbp:notableSite |
gptkb:Valley_Forge
gptkb:Cornwall_Iron_Furnace gptkb:Pine_Grove_Furnace Hopewell Furnace |
| gptkbp:periodOfSignificance |
18th century
19th century |
| gptkbp:replacedBy |
gptkb:steel
|
| gptkbp:resourceUsed |
gptkb:iron_ore
charcoal limestone |
| gptkbp:bfsParent |
gptkb:Isabella_Furnace
|
| gptkbp:bfsLayer |
7
|