Non-metallic Mineral Mining: China Gengsheng Minerals (NYSEMKT:CHGS), Dominion Diamond (NYSE:DDC), Yanzhou Coal Mining (NYSE:YZC), Westmoreland Coal (NASDAQ:WLB)

China Gengsheng Minerals Inc. (NYSEMKT:CHGS) soared 17.86% to new high, extending gains possibly for technical reasons as there no major news to point for the activity. International stocks trading in New York closed higher Friday, with the Bank of New York index of American depositary receipts adding 1.2% to 145.85. China Gengsheng Minerals Inc. (NYSEMKT: CHGS) stock opened at $0.56 in last session, and closed at $0.590, while the day range of China Gengsheng Minerals Inc. (NYSEMKT: CHGS) stock is $0.56 – $0.62. The stock showed a positive weekly performance of -10.61%.

The diamond mining sector tends to go through waves of acquisitions. The last round saw Dominion Diamond Corporation (NYSE:DDC) and Petra Diamonds emerge as high-volume producers as they snapped up mines that were for sale at BHP Billiton and De Beers respectively. It might make sense that the next round would see mergers between smaller mid-tier companies. Dominion Diamond Corp (NYSE:DDC) stock opened at $14.92 in last session, and closed at $14.92 by gaining 0.61%. The 52 week range of $11.94 – $17.02. Company’s market capitalization is $1.27B.

Yanzhou Coal Mining Company Limited (ADR) (NYSE:YZC) is principally engaged in coal mining, washing, processing and distribution. The Company operates its businesses through coal business, railway transportation, coal chemical, electric power and heat. Its products include raw coal, commodity coal, coking coal and methanol, among others. Yanzhou Coal Mining Co Ltd (ADR) (NYSE:YZC) stock decreased -1.58% and finished the last session at $7.47. The EPS of the stock remained -0.37. Company’s market capitalization is $3.67B.

Westmoreland Coal (NYSE:WLB) announced its earnings results on Friday. The company reported ($0.42) EPS for the quarter, missing the Thomson Reuters consensus estimate of $0.14 by $0.56, ARN reports. Westmoreland Coal Company (NASDAQ:WLB) stock opened the session at $22.00, and closed the session at $21.52. The 52 week range of the Westmoreland Coal Company (NASDAQ:WLB) stock remained $9.82 – $23.25 and the day range was $21.25 – $22.48.