India's first Sandvik DT1130 underground jumbo 3-boom drilling rig has been delivered to the South Korean Engineering & Construction Co – Karam Chand Thappar Joint Venture (S. K. E & C – KCT JV) for the third of the country's three crude oil storage caverns – together with two Sandvik DT820 2-boom rigs and a second DT1130 for its Phase 1B contract.