Boom 04 : (1) Projecting pole or metal beam, hinged at one end and capable of lifting a weight at the other. Normally part of a log loader. (2) A raft of logs, or a string of logs chained together end to end and used to hold floating logs
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}