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2. Construction aggregate - Wikipedia

   en.wikipedia.org/wiki/Construction_aggregate

   In Europe, sizing ranges are specified as d/D, where the d shows the smallest and D shows the largest square mesh grating that the particles can pass. Application-specific preferred sizings are covered in European Standard EN 13043 for road construction, EN 13383 for larger armour stone, EN 12620 for concrete aggregate, EN 13242 for base layers of road construction, and EN 13450 for railway ...

3. Crushed stone - Wikipedia

   en.wikipedia.org/wiki/Crushed_stone

   Substitutes for crushed stone used as construction aggregates include sand and gravel, iron and steel slag, sintered or expanded clay or shale, and perlite or vermiculite. [7] A crushed stone barge in China Crushed stone laid as a road base. Crushed stone is a high-volume, low-value commodity. The industry is highly competitive and is ...

4. List of quarries in the United States - Wikipedia

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

   A Paleo-Indian fluted point, a very rare stone tool, was among them.[1] At the time of its discovery it was the oldest such site east of the Mississippi.[2] The site has been at the center of a battle between local archaeologists and the Pleasant Valley-based Dutchess Quarry and Supply Company, which actively produces dolomite gravel on the site."

5. New Fairfield County land-use plan worries many who fear ...

   www.aol.com/fairfield-county-land-plan-worries...

   A 1,000-foot-long gravel drive leads visitors through a canopy of towering oaks to the 1850-era brick Federal-style house that has been added on to; Crow has several studios for her textile ...

6. Marble Cliff Quarry Co. - Wikipedia

   en.wikipedia.org/wiki/Marble_Cliff_Quarry_Co.

   The company grew through the expansion of stone grades from one to six and market-specific divisions that cater their products to specific industries, and at one point employed as many as 500 men. [ 4 ] [ 3 ] By 1928, Marble Cliff Quarry was producing 3 million tons of stone per year, and purchased land in Muskingum County to expand their ...

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