Machines or tools used for felling and processing the trees. If an intervention has taken place since the last Inventory, the data is based on the means actually used. If no intervention has taken place, it is based on the means that would have been used in the case of an intervention at the time of the current Inventory, according to the district forester's assessment. Reference: Forest Service Survey (MID 352: Art der Holzernte)

Code	Text	NFI2	NFI3	NFI4	NFI4b	NFI5
-1	n/a	x	x	x	x	x
1	axe, hand saw	x	x	x	x	x
2	chainsaw	x	x	x	x	x
3	processor	x
4	chipper	x
5	harvester	x
6	chainsaw, then processor		x	x	x	x
7	wheeled harvester		x	x	x
8	tracked harvester		x	x	x
9	walking harvester		x	x	x	x
10	chainsaw, then chipper		x	x	x	x
11	feller buncher, then chipper		x	x	x	x
12	chainsaw, then yarder		x	x	x	x
13	chainsaw, then helicopter		x	x	x	x
14	others		x	x	x	x
15	wheeled harvester without traction aid winch					x
16	wheeled harvester with traction aid winch					x
17	tracked harvester without traction aid winch					x
18	tracked harvester with traction aid winch					x