Assertion: ore's iron | /r/HasProperty | required by its industry
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Source sentences:
text: By the 18th century, the availability of wood for making charcoal was limiting the expansion of iron production, so that England became increasingly dependent for a considerable part of the iron required by its industry, on Sweden (from the mid-17th century) and then from about 1725 also on Russia.[citation needed] Smelting with coal (or its derivative coke) was a long sought objective.