Case Study Overbreak Control in Tunnelling Purulia Pumped Storage Project, India Page 1 | © Copyright Orica Limited Group www.oricaminingservices.com | Document reference: 100008 Site Profile The Purulia Pumped Storage Project is a 900 MW hydroelectric project of West Bengal State Electricity Board. The hydel project is located at Ayodhya hills in the Purulia district of West Bengal. Taisei Corporation, Japan, who is the princi

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