( 1 ) THESE appeals arise out of the judgment passed by the learned trial Judge on Feb. 28, 1985 disposing of the five writ petitions concerning C. R. Nos. 14809 (W) to 140812 (W) of 1983 and C. O. No. 19444 (W) of 1984. Against the said judgment disposing of the writ petitions by the learned trial Judge, Shree Jagadamba Coke Manufacturing Enterprises, Sree Shyam Industries, Bajarangbali Coal Co. Ltd. , Tentulia Coke Plant. G. N. Coke Manufacturing Co. Private Limited and Premium Fuels preferred appeal and such appeals have been heard analogously and are being disposed of by this judgment because in all these appeals a common question of law and fact is involved.

( 2 ) IT appears that Premium Fuels did not move any writ petition but they made application for being added as parties in the pending writ petition and it appears that Premium Fuels were allowed to intervene in the pending writ proceedings and make submission.

( 3 ) IT appears that there are about 100 coke oven plants operating in Bihar and West Bengal out of which only one coke oven plant viz. Premium Fuels is situated in West Bengal and the rest are in Bihar. For manufacturing hard coke, these coke oven