الصفحة الرئيسية > Term: critical area of extraction
critical area of extraction
The area of coal required to be worked to cause a surface point to suffer all the subsidence possible from the extraction of a given seam.
- 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)