How to Find The Origin Of Your Last Name. Surnames, or last names, have been in existence since the 13th century. They were adopted as a means to distinguish people for tax purposes, but have become a way to identify people by their family, country of origin, and in some cases, religion.
As of the census of 2000, there were 1,905 people, 794 households, and 578 families residing in Coal City. The population density was 303.8 people per square mile (117.3/kmÂ²). There were 845 housing units at an average density of 134.7/sq mi (52.0/kmÂ²).
Average annual number of employed coal miners in the United States, 1890-2014. US employment in coal mining peaked in 1923, when there were 863,000 coal miners. Since then, mechanization has greatly improved productivity in coal mining, so that employment has declined at the same time coal production increased. The average number of coal mining employees declined to 65,400 in 2015.