JUDGMENT:

RAVEENDRAN, J. -- These appeals are filed against the common judgment dated 15.10.1999 passed by the High Court of Orissa in Misc. Appeal No.296/1998 filed by the respondents and Misc. Appeal No.198/1998 and Civil Revision No.109/1998 filed by the appellant.

2. The appellant is stated to be legal heir and successor in interest of N.C. Budhraja (hereinafter referred to as the contractor). M/s. Orissa Mining Corporation Ltd. (for short OMC or respondent) entered into an agreement dated 16.9.1967 (Agreement No.30/F-2) for removal of over-burden at Kaliapani (Cuttack District) by excavation in all kinds of soil (including stoney earth and gravel mixed with boulders), and depositing/disposing of the same, as directed. The maximum lift was 6m including initial lift of one metre. The order to commence work was issued on 23.9.1967. Parties also entered into three supplementary agreements in regard to the said contract No.30/F-2, on 2.8.1969, 7.3.1970 and 10.2.1972. [Note : OMC had also entered into other contracts with the contractor including contract dated 22.2.1968 (Contract No.2/F/2) for raising Chrome Ore by open excavation from the