When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Slate industry - Wikipedia

    en.wikipedia.org/wiki/Slate_industry

    The slate deposits in this region of northern Spain are over 500 million years old, having formed during the Palaeozoic period. The colour and texture of the slate produced is largely dependent upon the tectonic environment, the source of the sedimentary material from which the slate is comprised, and the chemical and physical conditions ...

  3. Slate - Wikipedia

    en.wikipedia.org/wiki/Slate

    The word "slate" is also used for certain types of object made from slate rock. It may mean a single roofing tile made of slate, or a writing slate , which was traditionally a small, smooth piece of the rock, often framed in wood, used with chalk as a notepad or notice board, and especially for recording charges in pubs and inns.

  4. List of quarries in the United States - Wikipedia

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

    Massachusetts Hornfels-Braintree Slate Quarry, Milton and Quincy, Massachusetts, NRHP-listed, archaeological site used from 7,000 B.P. until the early 17th century as a source of slate and hornfels used for chipped and ground tools. W.N. Flynt Granite Co., in Monson, Massachusetts, a granite quarry that opened in 1809 and operated until 1935 ...

  5. Slate industry in Wales - Wikipedia

    en.wikipedia.org/wiki/Slate_industry_in_Wales

    The quarrymen proper, who made up just over 50% of the workforce, worked the slate in partnerships of three, four, six or eight, known as "bargain gangs". [49] A gang of four typically consisted of two "rockmen" who would blast the rock to produce blocks, a splitter, who would split the blocks with hammer and chisel, and a dresser.

  6. It's a clean slate for the roof of this historic Welsh ... - AOL

    www.aol.com/clean-slate-roof-historic-welsh...

    A Peach Bottom, fourth-generation slate roofing company restores a Welsh cottage in Coulsontown. It's the same slate used for the Biltmore mansion.

  7. Roofing slates - Wikipedia

    en.wikipedia.org/wiki/Roofing_slates

    The world's biggest consumer of slate is France, followed by the UK, USA and Germany. In 2012, Spain produced more than 580,000 tonnes (570,000 long tons; 640,000 short tons) of slate worth about $380 million. This made it the largest slate producer in the world, followed by China and Brazil. [3]

  8. Slate industry in Spain - Wikipedia

    en.wikipedia.org/wiki/Slate_Industry_in_Spain

    Slate deposits are over 500 million years old, having been formed during the Cambrian, Ordovician and Silurian periods of the Palaeozoic era. Essentially, slate forms when the clay minerals in shale are put under increased pressure with high temperatures.

  9. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!