BUZZ-Essentra: Stock falls as oil & gas slump hurts co's unit
** Shares (Berlin: DI6.BE - news) in Essentra (Other OTC: FLRAF - news) suffer biggest one-day fall since August 2011 after one of its units flags concerns arising from lower rig count in the U.S and reduced demand
** Stock top loser on the London Stock Exchange (Other OTC: LDNXF - news) , down 8 pct
** Co says its pipe protection technologies business, part of its specialist technologies unit, severely impacted by developments in the oil and gas industry
** Huge decline in North American rig count resulting in reduction in drilling activity and demand from pipe mills hurt like-for-like revenue, which fell 63 pct
** Co earned 70.5 mln stg revenue out of its total of 550 mln stg from the specialist technologies division
** Essentra's unit Specialist Technologies counts oil and gas, construction as one of its primary end-markets (aashika.jain@thomsonreuters.com)