- selective working-off
- выборочная отработка
English-Russian mining dictionary. В.П. Манышев.
English-Russian mining dictionary. В.П. Манышев.
Working terrier — A working terrier is a small type of dog which pursues its quarry into the earth. According to the Oxford English Dictionary, the name dates back to at least 1440, derived from early modern French (chien) terrier from the medieval Latin terrarius … Wikipedia
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