State-owned Oil and Natural Gas Corp (ONGC) is mulling on a vision document for 2040 that will lay the strategic roadmap for the nation’s largest oil and gas producer for the next two decades. ONGC Chairman and Managing Director Shashi Shanker, in his speech after hoisting the national flag at the company headquarters at Dehradun, said the vision document ‘Strategic Roadmap 2040’ would craft the strategy