For those interested in machinery here,s a few pics of a larger woodchipper i,ve just been out to Norway to have a look at.
Fitted with a CAT 1050hp V12 this beastie is capable of taking a 30" diameter tree in whole and will process in excess of 150 tons per hour if fed fast enough.
First pic is at the start of a demonstration and last pic is 45mins and 85tons of wood later