Ukraine has regained control of a set of oil drilling platforms located in the Black Sea, Ukraine's Military Intelligence (HUR) announced on Sept. 11. The rigs had been occupied by Russia since the 2014 illegal annexation of Crimea.
[pdf] Since 2003, HardRock Infrastructure Services has been taking on the kinds of projects others will not touch. What started with one man, one rig, and a pocketful of credit cards quickly evolved into one of the top providers of horizontal directional drilling (HDD) services in the United States.
[pdf] There are many different types of drill bits, each designed for a specific purpose. However, the main factor determining which drill bit to use on rock is the hardness of the material. The harder the rock, t.
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