Jones and Cassidy went on to play mother and son on The Partridge Family, which debuted in the fall of 1970. Danny Bonaduce and Susan Dey were also key members of the cast.
Sour crude oil. Sour crude oil is crude oil containing a high amount of the impurity sulfur. It is common to find crude oil containing some impurities. When the total sulfur level in the oil is more than 0.5% the oil is called sour.
Often, sour crude oil is processed into heavy oil like diesel and fuel oil (instead of gasoline) to decrease processing expenses. For safety reasons, sour crude oil must be stabilized prior to being transported by oil tankers. This is achieved by removing the hydrogen sulfide gas (H2S).