Pit & Quarry articles from August 1998

Pit & Quarry archives from August 1998

The real safety winners.(Editorial)
August 1, 1998... I just returned from the National Stone Association's (NSA) mid-year meeting in Denver, which featured the organization's annual safety awards program. Pit & Quarry was proud to co-sponsor the event. During the awards ceremony, and indeed all...

Construction contracts slip.
August 1, 1998... At an annualized $339.8 billion, new construction contracts in May came in three percent below April's level, according to the F.W. Dodge report. Lower activity was reported for housing and public works while nonresidential building was able to...

Multi-employer worksites.
August 1, 1998... In occupational safety and health law, a "multi-employer worksite" is one where more than one employer has employees working in the same operational area. A typical situation arises when an owner of a plant engages a contractor to do...

Refuting USA Today. (publication)
August 1, 1998... The MSHA "Ministry of Truth" has to be overjoyed with the July 8 cover story in USA Today, entitled "Deadly accidents in quarries on rise." Paragraph two makes it clear where the information came from, and the ingeniously wrong illustration that...

Highway funding: a TEA 21 summary. (includes related article on TEA 21 provisions)
August 1, 1998... TEA 21 will ensure that America builds the world-class transportation system it needs for the next century. On May 22, 1998, Congress passed TEA 21 - landmark transportation legislation covering highway, highway safety, transit and...

Carrying the load. (loaders)(includes related articles on multi-purpose loaders)(Cover Story)
August 1, 1998... Two California quarries discover that when it comes to loaders, bigger is better. The big players in the aggregates industry are getting bigger partly through acquisition of small, and at times, inefficient operations. These large companies...

The big time. (world's largest limestone quarry, which is Michigan Limestone Operations LP's 6,000-acre quarry operation at Rogers City, MI)(includes related article on the Rogers City quarry)
August 1, 1998... Everything is huge at Michigan Limestone's 6,000-acre Rogers City operation. Outside of town on Route 23, a sign reads "Rogers City, Michigan Home of the World's Largest Limestone Quarry." A little farther along, Quarry View Road leads to a...

Understanding blast vibrations. (mining industry blasting operations)
August 1, 1998... A key to gaining control of your blasting program is to know how the geology of your deposit contributes to vibrations. Since the 1930s, human perception and response to ground vibrations from blasting have been a continual problem for the...

The importance of fragmentation. (blasting activities at mining operations)
August 1, 1998... The ability to assess breakage more quantitatively can help quarry operations reduce blasting costs. It has long been known that fragmentation is a very important measure of any blasting program. Fragmentation that is too coarse, or too fine,...

South Central report. (stone production in south central region of the US)
August 1, 1998... Stone producers in the South Central region of the United States are upbeat, saying they expect strong market conditions and steady business for the rest of 1998 and into 1999 and beyond. Helping to drive the positive outlook in the...

Superpave projects increase fourfold.
August 1, 1998... This year, one-third of hot-mix asphalt projects will be Superpave. State highway agencies plan to build 1,339 Superpave pavements in 1998. This is nearly a fourfold increase from the 350 Superpave projects built last year, according to a new...