First Modifier	Category	Code	Remarks
Biological	CBRN Type	01
{Disused}		02
{Disused}		03
{Disused}		04
{Disused}		05
Coal	Electric Power Type	06	Used with Electric Power only
Geothermal	Electric Power Type	07	Used with Electric Power only
Hydroelectric	Electric Power Type	08	Used with Electric Power only
Natural Gas	Electric Power Type	09	Used with Electric Power only
{Disused}		10
{Disused}		11
Civilian Telephone	Telecommunication Type	12
Civilian Television	Telecommunication Type	13