It was a predecessor of Viru Keemia Grupp, a shale oil extraction company.

It built 14 experimental oil shale processing retorts in Kohtla-Järve.

[2][3] These vertical retorts used the method developed by Julius Pintsch AG that would later evolve into the current Kiviter processing technology.

[4] Following the experimental retorts, the first commercial shale oil plant was put into operation on 24 December 1924.

[6] In 1939, it was the second-largest shale oil producer after Eesti Kiviõli with 61,000 tonnes.