Blasting day never short on excitement
Two well drilling rigs worked steadily in the sweltering Iowa heat, up on the top of the 60-foot-high quarry cliff face. They drilled rows of 60-foot-deep holes, into which we would pack three-inch by two-foot sticks of dynamite on blast day. These explosives would then, when detonated, blast the limestone cliff face loose so that the smaller rock could be picked up by a huge loader and dumped into a rock crusher.
Are you a newspaper subscriber but you don't have a Digital Access account yet? https://secure.forumcomm.com/?publisher_ID=40&event=subscriber/lookup.
You will need your subscription account number and phone number. Not sure if you have an account? Email us at email@example.com and we can help you.