I am so sorry, I thought I had responded to you earlier.My great-grandfather and family (my grandfather included) left Kansas for Springfield, Illinois, and were living there by 1918. I know this from WW I draft records.However, one great-uncle, John Gorsek Jr., stayed behind in Kansas for awhile and then moved to Springfield at a later date.I have heard stories about my great-grandfather being VERY involved in one of the mine unions, but I will need to check with my mother to find out which one it was.Also, my great-grandfather, John Gorsek Sr., was VERY involved with the SNPJ and wrote many articles which were published in the Prosveta. It was only recently that I found out that he actually had a high position with the SNPJ.If I am correct, he may have been the treasurer, but I will need to double check that information.
I do know my ancestors were also in Mineral Springs and surrounding areas between the years of 1908-1918.
I hope you are able to "figure out" how you know the Tomsic/Gorsek names. That might just open more doors for both of us :)