Grumpa, when you start adding up the numbers, crushing your own gravel is a daunting chore. As a previous poster noted, you would need 9000 tons. If you could crush 4 tons a day, it would still take you six years just to crush the material if you worked 8 hr per day and 365 days per year. I think you most likely would be able to crush a ton or less with anything attached to your tractor. That doesn't count collection and stockpiling the crushed material. Even if the 9000 tons is off, half or one-third that amount is still an unbelievable task.
I used to work for the geology department of a university. They had a small crusher that could crush 3"-4" diameter rocks. It was something donated by a mining company. The machine was about 3' square and 4' tall. If you scale that up to handle 16" rocks, you end up with a huge machine. I don't think a tractor is going to be able to run or haul a machine that can do that.
I think I'd be looking for some federal or state help. You really need a grant to help with a task this size. If you had more acreage, you could apply under the Great Plains programs that help farmers build fences, ponds, and soil conservation projects. "Great Plains" was the name they used to have and may have changed. You need about 60 acres or more to qualify and they will pay 75%. This program may have even gone away due to budget cuts, but it would be worth your time to talk to the Dept. of Agriculture to see if it still exists.
If you can't come up with a good solution, you may find yourself parking your car/truck 4 miles away in bad weather and using an ATV to get to your house. It ain't the best solution, but it's a lot better than getting stuck in muck all the time. /forums/images/graemlins/tongue.gif
