updated about 7 years ago by Karl Zwonnikoff
Source
Comments
This is an approximate value.Pg 10 of the report (pg 10 of the pdf) states: "Calgon Carbon Corporation
employs more than 1,100 people at 15 manufacturing,
reactivation and equipment fabrication facilities in
the U.S., Asia, and Europe, where Calgon Carbon is
known as Chemviron Carbon."