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 in to pressures. Although lacking in actual popular support, the letter was argued to be the among most important and influential acts of opposition during its period, and a notorious break with the tradition of strict obedience and party discipline. Nevertheless, political scientist Michael Shafir argues that the act of collective dissent within the Party was "too little, too late" and that if it had been done in the mid-1970s, it might have had some consequences and could have been a starting point for some real changes. Letter of the Six The Letter of the Six (Romanian: "Scrisoarea celor șase")