My daughter came across a belt buckle that says "Sunshine Mining Company" on the front. On the back it says "Wyoming Studios" & "In appreciation of April 1981 Productivity" We know that there was a major disaster at the mine in 1972 and that they sold out or went out of production in 1981 or 82. Does anyone know anything about these buckles? Were they given out yearly? Any info would be appreciated!! Lori