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2. Fire brick - Wikipedia

   en.wikipedia.org/wiki/Fire_brick

   A fire brick, firebrick, fireclay brick, or refractory brick is a block of ceramic material used in lining furnaces, kilns, fireboxes, and fireplaces. A refractory brick is built primarily to withstand high temperature, but will also usually have a low thermal conductivity for greater energy efficiency .

3. Grog (clay) - Wikipedia

   en.wikipedia.org/wiki/Grog_(clay)

   In Middle and South Europe, grog is used to create fire-resistant chamotte type bricks and mortar for construction of fireplaces, old-style and industrial furnaces, and as component of high temperature application sealants and adhesives. A typical example of domestic use is a pizza stone made from chamotte. Because the stone can absorb heat ...

4. Fire clay - Wikipedia

   en.wikipedia.org/wiki/Fire_clay

   Fire clay in a furnace. Fire clay is a range of refractory clays used in the manufacture of ceramics, especially fire brick.The United States Environmental Protection Agency defines fire clay very generally as a "mineral aggregate composed of hydrous silicates of aluminium (Al 2 O 3 ·2SiO 2 ·2H 2 O) with or without free silica."

5. Refractory - Wikipedia

   en.wikipedia.org/wiki/Refractory

   Standard shapes have dimensions that conform to conventions used by refractory manufacturers and are generally applicable to kilns or furnaces of the same types. Standard shapes are usually bricks that have a standard dimension of 9 in × 4.5 in × 2.5 in (229 mm × 114 mm × 64 mm) and this dimension is called a "one brick equivalent".

6. Amazon workers authorize strike at company's first-ever ...

   www.aol.com/amazon-workers-authorize-strike...

   Thousands of Amazon workers at the company's first-ever unionized warehouse voted to authorize a strike on Friday, claiming the tech giant has refused to recognize the union and negotiate a ...

7. Harbison-Walker Refractories Company - Wikipedia

   en.wikipedia.org/wiki/Harbison-Walker_Refractori...

   The Harbison-Walker Refractories Company is a national historic district and historic refractory brick manufacturing complex which is located in Mount Union in Huntingdon County, Pennsylvania. It originated as the Star Firebrick Company on March 7, 1865, with Articles of Association by a group of Pittsburgh and Allegheny residents.