I believe you are refering to the Zinc mines in La Salle. A recent article about the restoration of the Hegler- Carus Mansion was in the fall Edward Heleler, who along with Frederick Matthiessen founded the Zinc company , there are very few of these in the world it was followed by a article about xmas time O f the eldest son 102 whom still lived there died. It is a haunteing looking victorian house I was there with my godmother many years ago in the 40's Her sister was married to Paul Carus,Built in 1874 it was a scary place to me at 7-8, but never fogotton, A freind from Marsellies finally found it for me but it was a grand place I remember well diners in the dinning room I believe the article came form the Ottowa Paper and was witten byTammie Sloup. I do not have the date, but I bet that there you will fine the mines Susan, Clover SC, born in Marseilles