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The steep descent powered many early industrial activities , including flour milling and the original DuPont gunpowder mills , while the navigable channel to the Delaware River and Delaware Bay allowed manufacturers to load ocean-going ships from near their mills .
 organization: DuPont; location: Delaware River; location: Delaware Bay
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 organization: DuPont; location: Delaware River; location: Delaware Bay