Stone is the most widely used construction material in the world. Its use goes back to the dawn of civilisation. When some 4,000 years ago men cut stone to build the well known structures of the Cheops Pyramid in ancient Egypt and the historical site at Stonehenge in Great Britain, quarrying activities were already well established in many areas of the world. The Great Wall of China, constructed over 2,000 years ago, consumed staggering quantities of stone that was provided by the quarry industry in that region.

The demand for quarried aggregates is enormous. Quarries underpin the ongoing development and maintenance of our country. Stone is an essential component used in the construction of homes, factories, schools, hospitals and shopping centres. Road, railways, airport and port construction consumes large volumes of aggregates in every form, as does the ongoing forestry and rural development. Conservation initiatives are supported by the use of stone to protect landforms.

The quarry industry produces many millions of tonnes annually for use by the home building industry. Depending on design and site condition, over 4,000 tonnes of aggregates are used in the construction of just one kilometre of standard highway pavement, while the building of a new six lane motorway can consume in excess of 20,000 tonnes for the same distance.

Thus the quarrying and aggregate production industry plays a vital role in the nation's economy, not only by providing essential materials but in also by providing employment opportunities which are in many cases in rural areas.

Aggregates are the crushed rocks, gravel and sand which are produced by quarries. Most aggregate is produced from quarries that extract sedimentary and volcanic rocks. Some aggregates are produced by working gravel deposited by rivers. River extraction is limited to the estimated renewable quantity of the river. Material smaller than 2mm is classified as sand. This is extracted from deposits near the coast and is dredged from rivers and the seabed. Aggregates account for about one third of the value of annual New Zealand mine output.

The jaw crusher,cone crusher,impact crusher and mobile crushing plant from SBM can be used in quarries to produce aggregates.

Like Venezuela Brazil has a potential to become a platform for Belarus’ advancement to Latin America, Belarusian Foreign Minister Sergei Martynov told reporters in Rio de Janeiro on 22 March, BelTA has learnt.

Summing up the meetings of the Presidents of Belarus and Brazil in Rio de Janeiro on 22 March, Sergei Martynov noted that the talks outlined the basic avenues of cooperation. “This meeting between the two presidents is the first one in the history of bilateral relations. It laid the basis for further cooperation of the two countries,” the minister underscored.

The sides discussed the cooperation which would help promote the growth of the large-scale agricultural industry, first of all the supplies of agricultural equipment. The Brazilian side showed an interest in creation of assembly production facilities: it can be tractors or farm machinery. Brazil is interested in supplies of heavy duty quarry equipment and BelAZ dump trucks, creation of an assembly production as Brazil has developed metal mining industry.

Super dumps are large-framed, heavy-spec, dump trucks with four to seven axles and a trailing axle. The trailing axle is a liftable, load-bearing axle added to the rear of the dump truck to increase payload and maximize productivity. Super dumps are used in aggregate and road building applications and can legally haul payloads ranging from 19 to 32 tons*.

The Kenworth T800B Super 18 dump trucks being sold by Heritage Trucking are 18 wheel dump trucks with seven axles and 18-1/2 foot dump boxes that allow them to easily maneuver in tight spaces and haul up to twice the payload of standard dump trucks.

The super dumps will be sold on Day 2 (April 16) of the auction - along with a wide assortment of other transportation equipment, including over 110 truck tractors, 60 pickup trucks, 55 flatbed trucks, 50 water trucks, and a variety of bottom and end dump trailers.

The auction will also feature a large selection of aggregate and asphalt equipment from Phoenix-based Gila Resources and Tucson-based Lamb Rock, including screen plants, conveyors, crushers, pavers - to be sold on Day 1 (April 15) - and more than 25 mixer trucks - to be sold on Day 2.

"All the aggregate equipment in the auction complements the fleet of super dumps nicely because this equipment is often used together," said Mr. Holmberg. "This is a very unique opportunity for buyers in the market for this specialized equipment since they'll find all they need in one convenient location."