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Seneca Sandstone
In the 18th century the Potomac River was unnavigable upriver from Georgetown because Little Falls and Great Falls blocked the…
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Loudoun County Marble
Very few people are aware that here in Loudoun County, Virginia we have some of the finest marble deposits in…
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Virginia Freestone
The first important buildings in Washington DC such as the White House and the Capitol were constructed of Virginia Freestone…