digging line

digging line

[′dig·iŋ ‚līn]
(mechanical engineering)
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References in periodicals archive ?
The city's executive board yesterday agreed an implementation certificate with tram promoter Merseytravel, effectively allowing the transport authority to start digging Line One.
Crews made good progress Monday digging lines around the larger Bluegrass Fire, with help from helicopters dropping fire retardant.