Commodity Code

coal bed methane

http://resource.geosciml.org/classifier/cgi/commodity-code/coal-bed-methane

alt label
coal seam gas more like this
coal seam methane more like this
definition Coal bed methane (CBM) or coal seam gas (CSG) is a form of natural gas extracted from coal beds. Coal bed methane contains very little heavier hydrocarbons such as propane or butane, and no natural-gas condensate. It often contains up to a few percent carbon dioxide. more like this
notation
01.01.05.02.01 more like this
CBM more like this
source http://en.wikipedia.org/wiki/Coal_bed_methane more like this
type
Resource
Concept
broader gaseous hydrocarbons
narrower coal bed methane
in scheme commodity code
is primary topic of coal bed methane