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  2. Gravel pit - Wikipedia

    en.wikipedia.org/wiki/Gravel_pit

    Gravel pits are a main source of aggregates such as gravel and sand, which are extracted then processed extensively to be suitable for various uses. [4] Aggregates are mined to make concrete, be crushed into construction aggregate, and for other industrial mineral uses.

  3. Brannan Sand and Gravel Pit No. 8-Lake Sangraco Boathouse ...

    en.wikipedia.org/wiki/Brannan_Sand_and_Gravel...

    The Brannan Sand and Gravel Pit No. 8-Lake Sangraco Boathouse Complex was a gravel and sand pit located in Adams County, Colorado that was converted to a private boating and recreational venue. Once the gravel pit dried up, Lloyd S. Brannan converted the pit to a lake, named Lake Sangraco, along with surrounding buildings being renovated for ...

  4. Quarry - Wikipedia

    en.wikipedia.org/wiki/Quarry

    A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to manage their safety risks and reduce their environmental impact. [1] [2]

  5. Aggregate industry in the United States - Wikipedia

    en.wikipedia.org/wiki/Aggregate_industry_in_the...

    In 2023, the aggregate industry in the United States mined and sold 1.5 billion tons of crushed stone valued at more than $24 billion and 920 million tons of construction sand and gravel valued at $11 billion. [1] [2] There are thousands of aggregate-producing companies in the US, operating in each of the 50 states, and employing 105,000 people.

  6. 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."

  7. Little Paxton Pits - Wikipedia

    en.wikipedia.org/wiki/Little_Paxton_Pits

    Little Paxton Pits is a 127.4-hectare (315-acre) biological Site of Special Scientific Interest in Little Paxton in Cambridgeshire. [1] [2] Part of it is also a 60 hectare Local Nature Reserve (LNR). [3] [4] These flooded former gravel pits are of national importance for wintering wildfowl, especially gadwalls.

  8. Thornton Quarry - Wikipedia

    en.wikipedia.org/wiki/Thornton_Quarry

    Overhead view of the quarry. Thornton Quarry is one of the largest aggregate quarries in the world, located in Thornton, Illinois just south of Chicago.The quarry is 1.5 miles (2.4 km) long, 0.5 miles (0.80 km) wide, and 450 feet (140 m) deep at its deepest point.

  9. Lackford Lakes - Wikipedia

    en.wikipedia.org/wiki/Lackford_Lakes

    The lakes are disused sand and gravel pits in the valley of the River Lark. There are diverse dragonfly species, and many breeding and overwintering birds, including nationally important numbers of gadwalls and shovelers. Skylarks breed on dry grassland, and lapwings in marshy meadows. [4] There is access from the A1101 road.

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