Fumigation Under Sheets : Fumigation carried out under gas-proof sheets of plastic, tarpaulins, or other materials, but does not include space fumigation in which such sheets are used to isolate the fumigation area
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}