small-diameter blasthole

small-diameter blasthole

[′smȯl dī¦am·əd·ər ′blast‚hōl]

(engineering)

A blast hole 1½ to 3 inches (3.8 to 7.6 centimeters) in diameter, in low-face quarries.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.