Sandvik rigs for Vietnam hydroThe Dakmi 4 hydro plant project in Vietnam experienced unforeseen severe rock conditions near the portal of the 3.37 km-long tailrace tunnel, requiring the driving of a 195 m-long temporary access adit to open up two faces in better ground. The contractor has taken delivery of two Sandvik DT820 to carry out the extra drilling and rockbolting duties, as well as to get the project back on schedule. Read the full press release. 50/09.