JUDGMENT :

Tarlok Singh Chauhan, J.

Both these petitions have been filed for common relief which reads thus:

"(i) That a writ in the nature of certiorari may be issued and the award dated 17.1.2006, Annexure P-1 passed by learned Presiding Judge, Industrial Tribunal-cum-Labour Court, Shimla under reference No. 129/2000 be quashed and set-aside.

(ii) That a writ in the nature of mandamus may be issued directing the respondent to extend the same benefits to the present petitioners also as have been extended to other similarly situated workmen as per the judgment of this Hon'ble Court in LPA No. 69/2008."

2. The issue of progressive deconcentration of population and economic activities within the National Capital Region (Delhi), in terms of Master Plan for Delhi 1962 and National Capital Region Plan-2001, came up for consideration before the Apex Court in W.P. (C) No. 4677 of 1985, titled as M.C. Mehta vs. Union of India and others., (1996) 4 SCC 750. Vide judgment dated 8.7.1996, , Apex Court inter alia held that certain industrial units, including that of the appellant set up under the name of M/s Birla Textile Mills, being a hazardous/noxious/heavy/large industry falling within the c