Gravel
Gravel is a loose aggregation of rock fragments. Gravel occurs naturally throughout the world as a result of sedimentary and erosive geologic processes; it is also produced in large quantities commercially as crushed stone. Gravel is an important commercial product with several purposes. Almost half of all gravel production is used as aggregate for concrete.
Dependencies
| Concrete | |
| Sand | Gravel |
| Fire |
See also
References
| This article uses material from the Wikipedia article Gravel, which is released under the Creative Commons Attribution-ShareAlike 3.0 Unported License (view authors). | 
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