Hello everyone!

I would understand something better about the M-2150 "Kootenay" insulator.

It is common knowledge that they were produced in Bohemia (Europe) by Karlsbader Kaolin und Industrie Gesellschaft and exported to Canada in the early "1900's". Is that true? Do you have documents that certify these facts?

I need these info to study better which are the links between the Imperial Helmet of Niagara Falls, the Italian Umbrella Insulator by Eng. Guido Semenza and the Kootenay M-2150.

Thanks a lot to those who can help me.