DCHP-1 Online
jackladder 
n. See 1963 quote.
- 1944 [Caption] . . . this seasoned river man guides them [logs] towards the jackladder of the sawmill.
- 1957 The giant pulpwood operations in the Lake Superior region are indicated by this view of a jackladder and surrounding booms of logs at Terrace Bay.
- 1963 Jack Ladder. An escalator-type moving iron belt that carries the logs from the mill pond into the mill's conveying system or to the mill's slasher where the logs are cut smaller.
- 1944 [Caption] . . . this seasoned river man guides them [logs] towards the jackladder of the sawmill.