Active job

Ringing up felled pine tree trunks - small quick job

I need someone with a fairly good sized saw to cut into firewood sized rings a few remaining trunks from some pine trees I had cut down about 3 or 4 years ago (to clear the area before I get someone in to fell some more pines) . I imagine that for someone who knows what they are doing with a good sized saw this could likely all be done in a morning - The biggest trunk is about 700mm diameter at the widest end - that one is only about 5 meters long. The smaller trunk is only 350mm-ish diameter. Can be flexible with timing of this - ideally within the next week.