My gravel drive is in a bit of a state.
Over the years we've had 5mm, 10mm and 20mm gravel, and the last lot was unwashed, so came with free silt!
I'm thinking of shoveling it up and cleaning or re-grading it, just keeping the 20mm. I could do it with a riddle, but there is about 10 tons. Is there a machine I can hire?