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2. Gravel - Wikipedia

   en.wikipedia.org/wiki/Gravel

   ISO 14688 grades gravels as fine, medium, and coarse, with ranges 2–6.3 mm (0.079–0.248 in) for fine and 20–63 mm (0.79–2.48 in) for coarse. One cubic metre of gravel typically weighs about 1,800 kg (4,000 lb), or one cubic yard weighs about 3,000 lb (1,400 kg). Gravel is an important commercial product, with a number of applications.

3. Crushed stone - Wikipedia

   en.wikipedia.org/wiki/Crushed_stone

   Crushed stone has one of the lowest average by weight values of all mineral commodities. The average unit price increased from US$1.58 per metric ton, f.o.b. plant, in 1970 to US$4.39 in 1990. However, the unit price in constant 1982 dollars fluctuated between US$3.48 and US$3.91 per metric ton for the same period.

4. Rocker box - Wikipedia

   en.wikipedia.org/wiki/Rocker_box

   One to three cubic yards, bank measure, can be dug and washed in a rocker per man-shift, depending upon the distance the gravel or water has to be carried, the character of the gravel, and the size of the rocker. Rockers are usually homemade and display a variety of designs.

5. Emmet County DPW to increase collection rates on some ...

   www.aol.com/news/emmet-dpw-increase-collection...

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6. Dredge No. 4 - Wikipedia

   en.wikipedia.org/wiki/Dredge_No._4

   With its 72 large buckets, the dredge excavated gravel at the rate of 22 buckets per minute, processing 18,000 cubic yards (14,000 m 3) of material per day. It was in use from late April or early May until late November each season, and sometimes throughout winter. During its operational lifetime, it captured nine tons of gold.

7. $2 million price tag on Gravel Pit Fire - AOL

   www.aol.com/lifestyle/2-million-price-tag-gravel...

   At a community briefing on the Gravel Pit Fire Tuesday evening in Happy's Inn, Incident Commander Ken Parks said the estimated cost for fighting it was about $2.2 million. "But it could drop to $1 ...