hasty mine field

hasty mine field

[′hās·tē ′mīn ‚fēld]
(ordnance)
Field of mines quickly laid as a protection against an enemy attack; when practicable, it is laid in a definite pattern, as is a deliberate field, but measurements are approximate rather than exact.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.