Concerned over delays in execution of projects due to inter-ministerial differences, Prime Minister Manmohan Singh has called a high-level meeting to resolve issues like coal shortages and environment clearances with the concern ministers. A senior Power Ministry official said, the meeting, to be chaired by Prime Minister Manmohan Singh on July 1, will assess the progress made in the first four years of the current Plan and resolve the differences among the ministries. It will be attended by Finance Minister Pranab Mukherjee, Power Minister Sushil Kumar Shinde, Coal Minister Sriprakash Jaiswal, Steel Minister Beni Prasad Verma, Environment Minister Jairam Ramesh and Planning Commission Deputy Chairman Montek Singh Ahluwalia.