In 1990, they acquired Georgia Kaolin. Originally this had been EMC, a separate corporation, but was taken over by General Motors. Thomas Emery had immigrated from London in the 1830's. At some point, Emery was taken Cognis's web site said Cognis is a subsidiary of Henkel, with headquarters in the Netherlands. Cognis has had a subsidiary in North America since 1960, and dates back to at least 1840.
Emery is a brandname for some or all of their fatty acids.
Engelhard - According to American Chemical Industry , Charles Englehard came to this country in 1891 and set himself up as the representative of the major European platinum refineries. He then set up or acquired a number of platinum companies in this country, known jointly as Engelhard Industries in 1949. He also diversified into other precious metals. What the covered hoppers carried isn't known. They didn't listed any freight cars in '24 or '32.