Fair question Stig.
As you know the quality of the bush governs the wood that can be shifted. We are still logging "39 regen.". Whilst there is variation amongst it, it is generally accepted that you produce a 60m tree in 60 years.
Felling, limbing and heading off is my part of the process. Roading, making landings and scrubbing must be done before felling. Pulling the wood to the landing, barking, processing, grading and loading onto trucks has it on its way to the mill.
Harder bush on the North face of Mt. Baw Baw has the volumes back to 20- 25,000 ton (8 - 10,000,000 board feet). I hope that conversion is correct! In a 9 month season I would put about 200 litres of bar oil through my falling saw. If I get ahead of the skidder I go back to the landing and cut up for the excavator operator. If they are hard to bark it helps production on the landing.
Hand felling is almost a thing of the past now as it is expected that contractors use a harvestor. I wouldn't go back to the bush unless I could hand fall. I used to fall for a 4 man crew, Faller, skidder (grapple), excavator(landing) and dozer/landing man. The larger volume season that I fell had 2 excavators on the landing, 528 cable skidder, 2 dozers and landing man.
We are only as productive as our weakest link so a high volume year is a credit to the logging crew and the luck of the weather.
Graeme