World's First CDMA2000 Digital Mine
World's First CDMA2000 Digital Mine
2 PagesWorld's First CDMA2000 Digital Mine Underground Communications Project for Xinwen Mining Group Background Founded in 1956, Xinwen Mining Group is a subsidiary of Shangdong Energy Group which has an annual turnover of more than a hundred billion RMB and ranks 75th in the top 500 enterprises in China. In 2010, Xinwen Mining Group produced 37.23 million tons of raw coal, acquired CNY46.8 billion of sales revenues and ranked 14th in total stren
