Creosote removed; the "heavy oil", which sinks; and the "anthracene oil", which when cold is mostly solid and greasy, of a buttery consistence. Creosote refers to the portion of coal tar which distills as "heavy oil", typically between 230–270 °C, also called "dead oil"; it sinks into water but still is fairly liquid. Carbolic acid is produced in the second fraction of distillation and is often distilled into what is referred to as "carbolic oil". Commercial creosote will contain substances from six groups. The two groups occur in the greatest amounts and are the products of the distillation process—the "tar acids",
Letter of the Six Letter of the Six The Letter of the Six (Romanian: "Scrisoarea celor șase") was an open letter signed in March 1989 by Silviu Brucan, together with five other Romanian Communist Party dignitaries (Gheorghe Apostol, Alexandru Bârlădeanu, Grigore Răceanu, Corneliu Mănescu, and Constantin Pîrvulescu). The six communist politicians met and discussed the letter in parks in Bucharest, in order to prevent the Securitate from hearing the details. They were however, not isolated, but they were followed and had contacts with Soviet, American, British and Romanian intelligence officers and diplomats. The initiative came from Brucan, who discussed the plan with Apostol and