natural gas
grain is a natural resource of northen russia
mining is Nevada's major resource
Mining is the top resource in Russia
oil
In some geographies, yes, diamond is a major resource.
Coal! One third of coal is reserved in Russia!
Russia's major transportation is railroad's.
The Earth's major energy resource is the energy coming form the Sun.
natural gas reserves
coal
Nitrates for fertilizer used to be the major resource mined in the desert. Today copper is mined and the major resource of the area.