Hutchinson, T.P.2016-11-032016-11-032015Industrial Health, 2015; 53(2):176-1770019-83661880-8026http://hdl.handle.net/2440/102192Maximum acceleration and the Head Injury Criterion (HIC) are both used as indicators of likely head injury severity. A dataset has previously been published of impacts of an instrumented missile on four ground surfaces having a layer of between 0 and 16 cm of sand. The dataset is compared with recently-developed theory that predicts power-function dependence of maximum acceleration and HIC on drop height. That prediction was supported by the data. The surfaces differed in respect of the exponents estimated.en©2015 National Institute of Occupational Safety and HealthFall accident; Playground equipment; Head injury; HIC; Maximum accelerationJournal article003002431910.2486/indhealth.2014-01960003540720000092-s2.0-84926288099176331Hutchinson, T.P. [0000-0002-4429-0885]