Pit & Quarry articles from February 1998

Pit & Quarry archives from February 1998

Utilization of fines in concrete. (fine sand obtained from crushed stones)
February 1, 1998... How material specifications are being used to minimize the production of byproduct fines This paper was originally presented last April at the Center for Aggregates Research Symposium in Austin, Texas. - ed. By the early 1970s increased...

Cake walk in California. (Livingston-Graham production of saleable cake materials from silt)(includes related article on the function of a belt filter press)(Cover Story)
February 1, 1998... A Cornerstone quarry uses a belt filter press to turn sludge into a potentially saleable cake material, while reducing production costs and freeing up reserves. It may not be the kind of cake you can eat, but an operation can sure reduce...

Weigh your screening options. (screening and washing operation techniques)
February 1, 1998... With a variety of equipment options available, quarry managers must weigh the pros and cons of each in creating an efficient screening and washing operation. Quarry managers do a lot of weighing. Not in terms of tons, but in terms of weighing...

Hoover cleans up. (Hoover Sand & Gravel Co. Inc.)(includes related article on the brief history of Hoover)(Company Profile)
February 1, 1998... In western Pennsylvania and New York, Hoover Sand & Gravel moves a lot of material and gives a little back to the community. Hoover Sand & Gravel Co. Inc., Lowville, Pa., has continued to expand and modernize since first opening in 1963. The...

On-line oil analysis. (oil analysis reports through computers)
February 1, 1998... CLS DataLink brings oil analysis into the cyber-age. D-A Lubricant Go., Indianapolis, brings the cyber-age to its customers with an on-line oil-analysis service called CLS DataLink. Quarry maintenance managers can now access used oil-analysis...

Simple techniques to control risk. (controlling risks in quarry operations)
February 1, 1998... It is never too late to think about what to do after the fire, the spill or explosion has occurred. Businesses often overlook some simple procedures for controlling the risks of their quarry operations, and are leaving themselves open to...

Creston Sand & Gravel vs. the neighbors. (pit expansion issue)
February 1, 1998... A routine pit expansion proposal seemed simple enough at the beginning, yet opposition from neighbors, some miscommunication with state regulators, and a lack of adequate planning by the sand and gravel operation's owner may bury the entire...