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2. Quarter minus - Wikipedia

   en.wikipedia.org/wiki/Quarter_minus

   The quarter minus rock size can consist of rock in diameter as big as 1/4" in size and "fines" (anything smaller than the maximum allowable rock size (which in this case is 1/4), even as small as stone dust). Any aggregate with the name "minus" can contain up to 80% fines.

3. Whindust - Wikipedia

   en.wikipedia.org/wiki/Whindust

   Whindust is a local name used in Scotland and the North of England referring to fine-grained grit or dust resulting as a by-product from the grinding and breaking of Whinstone. [ 1 ] [ 2 ] Whindust is available in several forms, washed whindust, damp whindust and whindust.

4. Engineered stone - Wikipedia

   en.wikipedia.org/wiki/Engineered_stone

   As with any silica-containing stone, silicosis can result from breathing dust produced when cutting or processing engineered stone made with quartz. The risk of inhaling quartz dust can be mitigated by taking appropriate safety precautions. [10] [11] Risk of silicosis is high when little or no safety precautions or protective equipment are used ...

5. Incurable silicosis cost a countertop cutter his lungs. Are ...

   www.aol.com/news/incurable-silicosis-cost...

   From morning to evening, six days a week, Gustavo Reyes Gonzalez spent his days cutting engineered stone, a man-made product that has become a popular choice for kitchen and bathroom countertops.

6. Potting soil - Wikipedia

   en.wikipedia.org/wiki/Potting_soil

   A typical proportion of limestone to peat is 8.5 pounds per cubic yard (5.0 kg/m 3). [13] Coir contains a high amount of electrolytes (salts). In fact, untreated coir contains too much sodium and potassium for plant growth, so it is washed and then buffered (partially replacing salts with other minerals, usually calcium and magnesium) to ...

7. Hypertufa - Wikipedia

   en.wikipedia.org/wiki/Hypertufa

   A hand-shaped planter made of hypertufa. Aggregates are generally Sphagnum (peat moss), sand, and perlite or vermiculite. [1] Coconut coir is coming to take the place of sphagnum moss, as the latter is a very slowly renewing natural resource and the former is a ready byproduct of the coconut industry— it has all the advantages of the moss but without the environmental costs.