| http://www.w3.org/ns/prov#value | - Clause 10C of the contract provided that if during the works there was an increase of more than 10% in the cost of, among other things, materials or wages, the amount of the contract would be varied provided that the increase could not, in the opinion of the supervising engineer (whose decision would be final and binding), be attributed to a delay in the execution of the contract that was within t
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