OPEC siege members of OPEC were taken hostage in Vienna, Austria, where the ministers were attending a meeting at the OPEC headquarters at Dr-Karl-Lueger-Ring 10 (renamed Universitätsring in 2012). The hostage attack was orchestrated by a six-person team led by Venezuelan terrorist Carlos the Jackal (which included Gabriele Kröcher-Tiedemann, Hans-Joachim Klein and Anis al-Naqqash). The self-named "Arm of the Arab Revolution" group called for the liberation of Palestine. Carlos planned to take over the conference by force and kidnap all eleven oil ministers in attendance and hold them for ransom, with the exception of Ahmed Zaki Yamani and Iran's Jamshid Amuzegar, who
Damp (structural) "Understanding Dampness" makes the following observations about electro osmotic systems for the treatment of rising damp: BRE Digest 245 suggests that with the exception of replacement physical DPCs, only methods of treatment with third party accreditation (e.g. British Board of Agrément Certificate) should be considered for the treatment of rising damp. It then goes on to state that the only method of currently satisfying this requirement is DPC injection (liquid or cream – although damp-proofing rods have subsequently been made available with BBA approval) and that "this is the only method which BRE considers suitable where insertion of a physical