In situ leaching of ore bodies

In situ leaching process

In situ mining using bacteria

In situ oil shale retort having horizontal voids with side pilla

In situ oil shale retort having horizontally offset pillars

In situ oil shale retort system

In situ oil shale retort with a generally T-shaped vertical cros

In situ oil shale retort with a horizontal sill pillar

In situ oil shale retort with controlled permeability for unifor

In situ oil shale retort with differing upper and lower void fra

In situ oil shale retort with intermediate gas control

In situ oil shale retort with non-uniformly distributed void fra

In situ oil shale retorting process using introduction of gas at

In situ oil shale retorts with gas barriers for maximizing produ

In situ processing of mined oil shale

In situ recovery of mineral values

In situ recovery of shale oil

In situ recovery of shale oil

In situ recovery of shale oil

In situ retorting of oil shale