nruf: Resource Use Factor
Variable
Nonrenewable resource sector
Resource Use Factor [Dmnl]
nruf = clip ( nruf1 , nruf2 , pyear , time)

nruf in the updating graph: ( how to read )
In nodes
nruf1 : resource use factor 1
nruf2 : resource use fact 2
pyear : POLICY YEAR
Out nodes
icormrrct : industrial capital output ratio multiplier from resource conservation technology
nrur : resource usage rate