الصفحة الرئيسية > Term: secondary drilling
secondary drilling
The process of drilling the so-called "popholes" for the purpose of breaking the larger masses of rock thrown down by the primary blast.
- قسم من أقسام الكلام: noun
- المجال / النطاق: التعدين
- الفئة: تعدين عام; Mineral mining
- Government Agency: USBM
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المنشئ
- ed.young
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(Milwaukee, United States)