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2. List of quarries in the United States - Wikipedia

   en.wikipedia.org/wiki/List_of_quarries_in_the...

   Chile Bar Slate company quarry, off of highway CA193 next to the American River near Placerville, California; Limestone quarry near Auburn, California of the Mountain Quarries Company of San Francisco, a subsidiary of Pacific Portland Cement Company, near confluence of the North Fork and the Middle Fork of the American River.

3. Abercorris quarry - Wikipedia

   en.wikipedia.org/wiki/Abercorris_quarry

   Later in 1887 the company was involved in the important legal case Levy vs Abercorris Slate and Slab Co (1887) 37 Ch D 260 over the legal meaning of a debenture. [3] A reconstituted Abercorris Slate & Slab Quarry Company was begun in June 1890, again led by J.W. Orchard, [1] and it re-opened the quarry with 40 men employed. [2]

4. Aberllefenni quarries - Wikipedia

   en.wikipedia.org/wiki/Aberllefenni_quarries

   Slate extracted from the narrow vein at Aberllefenni is deep blue and extremely hard and dense. It resists fine splitting, so most of the mines' product was large cut slabs rather than split roofing slates. Foel Grochan mine consists of eight near-horizontal tunnels at approximately 60 feet (18.3 m) vertical separation.

5. Slate industry - Wikipedia

   en.wikipedia.org/wiki/Slate_industry

   Slate mines are found around the world. 90% of Europe's natural slate used for roofing originates from the Slate Industry in Spain. [1] The major slate mining region in the United Kingdom is the Lake district, with Honister slate mine being the last working slate mine, the only producers of the world famous Westmorland greenslate.

6. Marble Cliff Quarry Co. - Wikipedia

   en.wikipedia.org/wiki/Marble_Cliff_Quarry_Co.

   In 1985, the Kaufmans sold the 2,000-acre (8.1 km 2) quarry to investors who filled in and developed the quarry for residential use, including Marble Cliff Commons [6] [2] [3] apartments and Marble Cliff Crossing, a 100 single-family and 60 double-family subdivision built between 1998 and 2003. [7]

7. Roofing slates - Wikipedia

   en.wikipedia.org/wiki/Roofing_slates

   Roofing slates are roofing tiles made out of slate. The rock is split into thin sheets which are cut to the requires size before shipment. This contrasts to slabs which are milled to produce larger structural components. [1] They are the primary product of the slate industry.

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9. Bwlch y Slaters quarry - Wikipedia

   en.wikipedia.org/wiki/Bwlch_y_Slaters_quarry

   This quarry was owned by the Festiniog Slate Co., and the tramway was financed by them, with quarries who wanted to use it paying tolls to them. [4] Significant development of the Bwlch y Slaters site began in 1866, when a connection from the quarry to the tramway was made, enabling finished slates to be exported to market much more easily.