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2. Yogo sapphire - Wikipedia

   en.wikipedia.org/wiki/Yogo_sapphire

   [32] [33] The location of most Yogo sapphires within igneous rock rather than from alluvial placer deposits requires difficult hard rock mining. [34] Coupled with American labor costs, this makes their extraction fairly expensive. [16] [22] [35] At least 28,000,000 carats (5,600 kg) are estimated to still be in the ground.

3. River Rock Casino Resort - Wikipedia

   en.wikipedia.org/wiki/River_Rock_Casino_Resort

   River Rock Casino's west entrance. River Rock Casino Resort in Richmond, British Columbia is the largest casino in the province of British Columbia. [1] The casino is owned by Great Canadian Entertainment. The hotel has a total of 396 rooms, including standard rooms and suites and it is situated on the river with a 144-berth marina.

4. Alabaster - Wikipedia

   en.wikipedia.org/wiki/Alabaster

   Alabaster is a mineral and a soft rock used for carvings and as a source of plaster powder. Archaeologists, geologists, and the stone industry have different definitions for the word alabaster . In archaeology, the term alabaster includes objects and artefacts made from two different minerals: (i) the fine-grained, massive type of gypsum , [ 1 ...

5. Crawlerway - Wikipedia

   en.wikipedia.org/wiki/Crawlerway

   The Crawlerway is composed of two 40-foot-wide (12 m) lanes, separated by a 50-foot (15 m) median. The top layer is Alabama river rock, 4 inches (10 cm) thick on the straight sections and 8 inches (20 cm) thick on curves. Alabama river rock was chosen for many properties, including hardness, roundness, sphericity and LA abrasion test score. [3]

6. List of gold nuggets by size - Wikipedia

   en.wikipedia.org/wiki/List_of_gold_nuggets_by_size

   A gold nugget is a naturally occurring piece of native gold. Watercourses often concentrate nuggets and finer gold in placers.Nuggets are recovered by placer mining, but they are also found in residual deposits where the gold-bearing veins or lodes are weathered.

7. Graniterock - Wikipedia

   en.wikipedia.org/wiki/Graniterock

   Graniterock provides a wide range of construction aggregates, sand, decorative rock, concrete and building materials. It manufactures its own river rock and has a line of Wilson aggregates and sands. Graniteseal is Graniterock's own sealcoat system based on the Carbonyte Process, which modifies molecular bonds to convert asphalt into a ...