Ore that does not meet the required standards of quality
अयस्क जो आवश्यक गुणवत्ताओं को पूरा नहीं करता है
English Usage: The mining company had to discard a lot of off grade ore.
Hindi Usage: खनन कंपनी को बहुत सारे कम गुणवत्ता वाले अयस्क को फेंकना पड़ा।
kam gunvatta wala ayask, kam gunwatta wala aiyask, kam gunvatta wala ores, kam guntava wala aayask
