- G.O. (Ms) No. 42 PW(G2) Department, Dated 23-02-2007 (Courtesy: Shri. Avudai Nayagam, Superintendent, PWD)
- G.O.Ms.No.254 PW (G2) Dept., Dated:13-8-07 (Extracted Information)
- Procurement norms for COVID-19 issued by Government in Letter No.74/JS (MA)/ Finance (Salaries)/2020, Dated:01.04.2020 (Courtesy: Shri. NSL Ram Prabhu, SrDAO)
- Nomination of Contracts during emergency has been clarified by EIC(B) in letter No: HDO(A)/ 4836-B/ 2020 Dated 16/4/2020