The following issues arise for consideration in the present petition – (a) as to whether work executed by a contractor, in his capacity as a sub-contractor, can be considered to ... have been executed by “a contractor” as defined under sub-clause (iii) of clause (2) of Conditions of Contract, and (b) whether work so executed by the petitioner that of “Open Excavation of Roads and Barrage and “underground excavation work of Head Race Tunnel with concrete lining and other allied works” as a contractor can be construed to be similar to the “work”, “contracted to be executed”, so defined under sub-clause (1) of Clause 2of the Conditions of Contract.