Under section 71 of the Control of Pollution Act 1974, the Secretary of State may give guidance on appropriate methods for minimising noise (which, pursuant to section 73 of that Act, includes vibration) by approving codes of practice. The Secretary of State is required to approve a code for the carrying out of works to which section 60 of the Act applies. Section 60 applies to construction works, which include building and road works, demolition, dredging and other works of engineering construction.