A govt panel has also suggested invoking of bank guarantees submitted by 7 cos & warnings to 33 firms
SUCHETANA RAY & SARITA C SINGH NEW DELHI

The government may revoke allocation of 31 coal blocks held by Tata Steel, NTPC, JSW Steel, Jindal Power & Steel, Hindalco and 21 other firms for their failure to make required progress several years after allotment.
A review committee led by additiona