Mosaic is a big phosphate mining busness. Getting in touch with the owner is 100 % impossible
Used to hunt the mosaic property growing up. Back then it was IMC mines before they sold to mosaic No dogs allowed on any of there property any more. They have some guys that run traps on all of there property. Thousands and thousands of acres. Keep in mind that any of the phosphate companies absolutely hate hogs. They root up there gyp stacks and and burms which causes big problems for them with EPA. So technically they probably wouldn't b that upset with you for removing a hog and retrieving your dogs off there property. We do hog removal for another phosphate company here in central Florida so I know firsthand there outlook on this sort of thing. It's probably not as hard as you think to get ahold of someone. I would simply call there main office here in Florida and explain your situation. Let them know that you do "hog removal" (they love them words) on property adjoining there's. I would be really surprised if they wouldn't work with you and have no problem with you retrieving your dogs occasionally.