Summary
Bill Welke and Phil Gregg were reported to have flown mineral salt blocks to Garden and Beaver Islands in a Cessna during the winter of 1973. The article says the blocks were intended to supply trace minerals for wildlife and would last approximately a year.
Evidence and limits
The source gives the flight account and intended conservation purpose but does not identify the aircraft by registration, establish the exact date, or document the later placement of every block.
See also
Sources
- Beaver Beacon, February 1973, “Game News.”Reports Bill Welke flying a 180 Cessna with Phil Gregg as bombardier to drop mineral salt blocks on Garden and Beaver Islands, with additional blocks to be placed by foot or snowmobile. DNR biologists are quoted about trace minerals and the blocks’ expected longevity; the aircraft identity and exact flight date are not independently documented.