Contract Notice Boring MachineryBuying A Drilling RigDescription One Uphill Drilling Device For The Vertical Venting Of The Estonian Mine Is Purchased The Lift Boring Ring Rbr Is Used For Drilling Vertical And Sloping Shafts With A Diameter Of 3 053 1 M An Angle Of Inclination Of 090 Degrees And A Drilling Depth Of 60110 M Pilot Drilling Must Take Place From The Top From Top To Bottom From The Shaft From Bottom To Bottom The Unconfined Compressive Strength Ucs Of Rocks Is 55 Mpa And The Maximum Unilateral Compressive Strength Ucs Of Rocks Is 143 Mpa Time Limit For Receipt Of Tenders Or Requests To Participate Date 31 01 2019 Local Time 10 00 Disclaimer The Above Text Is Machine Translated For Accurate Information Kindly Refer The Original Document
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