(a) A significant rationalisation of UK health and safety legislation was made in 1974, when, in the light of the 1972 Robens Report, the Health and Safety at Work Act 1974 (HSWA) was passed. What was the fundamental duty that that Act imposed on employers whose activities would impose a risk upon their workers and/or the general public? (b) Explain the term "gross disproportion" and comment on how it is applied in the UK