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American Slate

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The main region of natural roofing slate in the US is an area in upper state New York and Vermont known as ‘Slate Valley’.

  • There are a large number of quarries in this small area which is 24 miles long and 6 miles wide
  • The slate quarries in this region were first uncovered by Welsh immigrants in the 18th century
  • There are a large number of colours available in this area including green, black and mottled purple and red