Unknown

Uphole hammer

Upward tunneling

Variable diameter earth boring bit

Versatile roof bolt assembly

Voussoir for a casing

Walking street for mine shaft

Wall element for an underground gallery

Wall segments

Washer for use in mining

Water-based industrial fluids

Wedge barrel for a twin cable mine roof bolt

Welded mesh rock support system for bursting and squeezing...

Work platform

Work platform

Working platform for a drilling apparatus

Yieldable cone bolt and method of manufacturing same

Yieldable cone bolt for use in small diameter bolt holes and...

Yieldable confined core mine roof support

Yieldable connection