"You are hereby called up to show cause, on each milestone separately to this ministry within a period of 20 days...As to why the delay in the development of the coal block should not be held as violation of the terms and conditions of allocation of Mednirai coal block and why the coal block should not be deallocated," the Coal Ministry said in letter to both the companies.
The ministry also asked the companies to furnish a detailed status note on the progress of end use plant for which the coal block was alloted.
The decision to issue show cause notice was taken after the recommendation of the Inter-Ministerial Group (IMG).
"Keeping in view unsatisfactory progress, IMG recommended to issue show cause notice for delay in development of coal block. The recommendation of IMG has since been considered and accepted by the government," the ministry said.
The government had formed the IMG last year to review the progress of coal blocks allocated to firms for captive use and recommend action, including de-allocation.