DCHP-2

main line DCHP-1 (pre-1967)

• 1 — North, Hist.

  See 1941 quote.

  See also: tracking line  

• 2

  See 1953 quote at line (def. 7).

  See also: line ((n.)) (def. 7)  

• 3 — Lumbering

  See 1942 quote. [See picture at high-lead system.] Also spelled mainline.

  See also: main