It’s an inconvenient fact that most of Earth’s largesse of useful minerals is locked up in, under, and around a lot of rock. Our little world condensed out of the remnants of stars whose death throes ...

The Robbins H-100 was a high-production blast-hole drill employed by a number of surface-coal-mining companies in the Illinois Basin during the 1960s and 1970s. Starting with development work in 1960 ...

Epiroc has introduced the Pit Viper 291 blasthole drilling rig. The large diameter, single-pass drill is designed to tackle larger diameter drilling in soft to medium ground conditions. Capable of 11 ...

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Redcastle Resources partner BML Ventures mobilises heavy mining equipment fleet Blast hole drilling has started at Queen Alexandra and Redcastle Reef gold deposits Continuous mining operations ...

The density of geological exploration boreholes is one of the main bases for blasthole charge structure design. Due to the low density of geological exploration boreholes, it is impossible to obtain ...

In situ stress and joints have a significant impact on the propagation and attenuation pattern of blast stress waves, and they are two important factors that must be considered for tunnel blasting ...

E. P. Deliac, J. P. Messines Elf Aquitaine Paris B. A. Thierree Exploservices Paris Oil exploration companies have taken increased interest in slim hole drilling as practiced by the mining drilling ...