Section 05 MINERAL PRODUCTS 27 Mineral fuels, mineral oils and products of their distillation; bitumi nous subs 27 05 Coal gas, water gas, producer gas and similar gases, other than petroleum gases 27 05 00 27 05 00 00 Commodity Code Description 27 05 00 00 00 Coal gas, water gas, producer gas and similar gases, other than petroleum gases and othe