Commodity Code

sand and gravel

http://resource.geosciml.org/classifier/cgi/commodity-code/sand-and-gravel

broader industrial rock
primary aggregate
narrower sand and gravel
definition Durable rock fragments (silicates, flints, etc) with a size range: 0.063 mm - 80mm, derived from the weathering, erosion and transport of rocks by glacial or fluvial processes. Used for aggregate purposes and construction fill. more like this
notation
01.01.01.01.03 more like this
SandG more like this
source BGS more like this
type
Resource
Concept
in scheme commodity code
is primary topic of sand and gravel