Plans To Dig the Biggest Lithium Mine in the US Face ...
Mining sizes and orientations are defined by orebody geometry, geotechnical parameters and minimum mining sizes based on the equipment fleet. Typical heading dimensions are 4.6 metres (15 ft) high and wide, and stopes are 4.6 metres (15 ft) wide for primary, and 9.1 metres (30 ft) for secondary stopes. Mining height is defined by orebody thickness.