abbr. aggregate abrasion value

Used extensively in materials handling to resist wear within high flow areas.

Set of procedures for accepting waste materials on site, including: list of types of materials accepted; methods (e.g. tests or controls) of acceptance; requirements arising from the Waste Management Regulations and the Duty of Care.

abbr. approved code of practice

A publication giving guidance on the implementation of requirements laid down in Regulations made under the Health and Safety at Work Act.

Rock is extracted from the ground in the quarrying process to produce aggregate.

Aggregate is screened into the sizes required for immediate use, or for further processing within the quarrying production line.

Abbr. British Cement Association.

The trade association for cement manufacturers in the UK and now part of the Mineral Products Association (MPA)

A belt cleaner, or a group of belt cleaners and associated equipment (such as mounts and tensioners are located on one conveyor)

A flexible rubber endless belt, looped over a framework of rollers and pulleys that is used to transport material from a load zone to a discharge point.

A high explosive; the most powerful commercial explosive, taken as the standard of explosive power.

Screened out fine material from the secondary crusher

A continuous line of buckets attached by pins to two endless chains running over tracks and driven by sprockets; alternatively, the buckets are attached to a rubber belt. Used for raising loose materials or slurries at high angles or vertically.

A receptacle on various machines, such as the scoop of a power shovel or the compartments on a water wheel, used to gather and convey material.

Size, mass, or volume, especially when very large.

The density of a material including any voids and water contained in it.

An engineering field that is centered on the design of equipment used for the handling of dry materials such as ores, coal, cereals, wood chips, sand, gravel and stone in loose bulk form. It can also relate to the handling of mixed wastes.

A mass of explosive material prepared for use without packaging.

An area in the warehouse set aside for storage of multiple pallets of a given product. Storage in warehouses of any large quantity of supplies, usually in original containers. The area within a facility or warehouse devoted to the placement of large items, floor stocking of pallets and reserve material to re-supply forward picking areas.

The strength of explosive per unit of volume expressed as a percentage of the value of blasting gelatine or ANFO as standard.

A convex curve of the belt

To take or carry materials from one place to another

A  length of flexible rubber belt that is stretched over a framework of rollers and pulleys and then made into a single piece by splicing its two ends together.

One that conveys, especially a mechanical apparatus that transports materials

Material-handling system using bars or plates on chain to pull the cargo to the discharge point.

The pulley connected to the drive mechanism of a conveyor belt.

Specially designed air permeable filter bags that trap and collect airborne dust from a material handling system.

Equipment used to reduce or prevent the spread of excessive dust within a production process

Tearsand rips along the edge of a conveyor belt

A continuous line of buckets attached by pins to two endless chains running over tracks and driven by sprockets; alternatively, the buckets are attached to a rubber belt. Used for raising loose materials or slurries at high angles or vertically.

The amount of explosive energy required to break a unit volume of rock (MJ/m3) which may be used as a blast design criterion

A system of gears in which one or more gear wheels travel round the inside or outside of another gear wheel, the axis of which is fixed

Explosion protection is used to protect all sorts of buildings and civil engineering infrastructure against internal and external explosions or deflagrations.

A detailed three-dimensional survey of the quarry face.

The amount of material flow that is being transferred on a conveyor at any give time, usually expressed in ‘tons per hour’

A device that feeds materials into a machine for further processing

Graded material which, in the case of concrete aggregate, is smaller than 4mm, and for road-making material is below 2mm.

The thickness of a belt or of its individual elements

Airflow produced by rotating devices that feed the conveyor load zone.

An instrument used in gravity surveying to measure changes in the value of gravity over an area.

Recovered stone, broken brick or the like which, when spread and compacted, can be used as a rough filling material.

The discharge end of a conveyor belt.

The terminal pulley located at the discharge point of a conveyor belt. On many conveyors, the head pulley is coupled to the drive motor to power the conveyor.

A non-powered rolling component used to support a conveyor belt on either the carrying run or the return run.

A rubber, fabric, or ceramic covering applied to a pulley shell to improve belt traction against the pulley.

The maximum total weight that can be handled by material handling equipment without sacrifice of any of the applicable published specifications of the equipment.

The enclosure that places the cargo onto the belts.

A device used for measuring the pressure of gases or liquids; on conveyors, used for measuring air flow.

The activities of loading, unloading, placing and manipulating material and of in-process movement.

The off-centre travel of a conveyor belt.

The tension of a belt while running with a material load

An ingredient in an explosive or blasting agent which supplies oxygen to combine with fuel to form gaseous or solid products of detonation. Ammonium nitrate is the most common oxidizer used in commercial explosives

When a cleaner blade is tilted in opposition to the direction of belt travel.

A pinch valve is a full bore or fully ported type of control valve which uses a pinching effect to obstruct fluid flow. There are a few types of pinch valves based upon application.

A rotating cylinder mounted on a central shaft that is used to drive, change direction of, or maintain tension on a conveyor belt.

A mechanism that allows an item to move away from an obstruction. These could include springs in the cleaning system – tensioner.

The side of a conveyor belt that does not carry cargo, after the discharge, as the belt returns to the loading zone.

A valve acting by continuous or partial rotation.

An additional short length of belting added to an existing conveyor belt.

A conveyor consisting of a central shaft with helical paddles or a complete helical screw rotating within a stationary tube or trough filled with the material being conveyed.

A series of conveyors designed to carry material out into a storage area

The opposite end of a conveyor to the delivery end.

A military explosive compound used industrially as a sensitizer for slurry-type explosives.

The shape of a belt with the edges raised allowing it to carry more material.

In the direction of the places the belt has already passed, or back toward the loading point.

The angle between two chute walls created by the side wall joining with the back wall.

Mistracking.