hard ore इन हिंदी

hard: पूरी तरह कठोर

ore: कच्ची धातु अयस्क

	1.	A cone crusher is suitable for crushing a variety of mid-hard and above mid-hard ores and rocks.
	2.	Vein gold needed crushing, and they probably used crushing or stamp mills worked by water-wheels to comminute the hard ore before washing.
	3.	It is highly likely that they also developed water-powered stamp mills to crush hard ore, which could be washed to collect the heavy gold dust.

अंग्रेज़ी→नहीं। नहीं।→अंग्रेज़ी