American Slate
The USA slate industry is concentrated in the Taconic region of Vermont and New York, known as the Slate Valley. Slate was first quarried in the US in 1839 at Fair Haven, Vermont. An influx of immigrants from the North Wales slate quarrying communities saw a boom in slate production that peaked between the late 1850s and early 1900s.
The slate deposits in this region are of an unusually high quality and offer their own unique colour characteristics, notably green, gray, black and red.