1.  Larsen & Toubro LTD – Engineering Unit-Hazira Works.
2.  Larsen & Toubro LTD: ECC Group – At their Nava Shiva Port site.
3.  Reliance Industries Ltd. – At their Patalganga site during 1983 to 1987.
– At their Hazira site during 1995.

4.  UB Engineering Ltd – At their Essar Hazira site.
– At their Reliance Hazira site.

5.  Goa-sponge Energy Ltd. – At their Goa Site
6.  Jaihind Projects Ltd. – At their Hazira Pipeline Project.
7.  Llyods Steel Industries Ltd. – At their ONGC site
8.  Mumbai Port Trust – At their Wadala & Wadi Bunder site.
9.  Kshi JV At their Delhi Metro Rail Project- New Delhi.
10. Prakash & Prakash Builders P. Ltd. – At their Vishakhapattanam site.
11.  Reliance Engineering Ltd. – At their Jamnagar site.
12.  Hindustan Dorr. Oliver Ltd. – At their Lanjigarh site.
13.  Sterlite Industries (I) Ltd. – At their Tuticorin Sterlite Site
14.  Stewarts & Lloyds of India Ltd. – At their Tuticorin Sterlite Site.
15.  Monnet Ispat & Energy Ltd. – At their Raigarh Site.
16.  DS Sugar Mill. – At their Sitapur Site.
17.  Voltas Ltd. – At their Chennai Site.
18.  BGR Energy Systems Ltd. – At their Warangal site.
19.  Hajee A.P. Bava & Co. – At their Rajasthan site
20.  Shree Kankeshwari Enterprise. – At their Rajula site (Gujarat)
21.  Best Cranes (P) Limited. – At their Durgapur site (West Bengal)
22.  S.E.W. Infrastructure Ltd. – At their Khalghat site (M.P.)
23.  True Fitness I. P.Ltd. At their Andheri site (Mumbai)
24.  M/s Shakthi Concrete P. Ltd. – At their Nalgoanda site (Hyderabad)
25.  BGR Energy Systems Ltd – At their Palonch Site (Andhra Pradesh)
26.  Pioneer Fabricators (P) Ltd – At their DMRC Project.