deep underground mining

form of underground mining, in which the development of the deposit and the extraction of the raw materials take place at a greater depth

en-US/ˈdip ˌʌndɚˈɡɹæʊnd ˈmaɪnɪŋ/
en-GB/ˈdiːp ˈʌndəɡɹaʊnd ˈmaɪnɪŋ/

دسته بندی ها:

underground mining