Pecah belakang ( back break )

358 View

Pecah belakang ( back break ) merupakan Sejumlah batuan yang turut terberai walaupun terletak di belakang baris lubang-lubang tembak yang diledakkan

Cari Istilah Geologi Tambang


Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.