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1. Where are
they?
a) south of Gladstone
b) east of Firestone
c) north of Greystone
d) west of Redstone
2. When were they built?
a) 1876
b) 1899
c) 1911
d) 1942
3. What are they?
a) coke ovens
b) charcoal kilns
c) ammunitions storage facilities
d) bread ovens
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