I have noticed a lot of people who work at height are using standard construction hard hats. The kind with the little beak at the front and an adjustable strap at the rear that grips the head. These hard hats are great for protecting against objects falling from overhead and conform to the EN397: Industrial helmets standard and are likely to be welcomed on any construction site. Unfortunately helmets conforming to EN397 are not likely to remain on an operatives head in the event of a fall. Helmets conforming to EN397 either have no chin strap or have chin straps that are designed to release at a low load. Whilst the chin strap releasing at a low load has its advantages, in the event of a fall that could be extremely disadvantages!