Released on: July 17, 2008, 1:54 am

Press Release Author: Tony Clark, Enviroflo Engineering Limited

Industry: Industrial

Press Release Summary: Each year the UK Quarry Products Association (QPA) issue a
number of \'Achievement Awards\' to operating Companies in the Quarry Industry. Out of
a total of more than 200 applications put forward CEMEX Halkyn gained a \'Highly
Commended\' Award for the Enviroflo/Nalco DustFoam System.

Press Release Body: Each year the UK Quarry Products Association (QPA) issue a
number of \'Achievement Awards\' to operating Companies in the Quarry Industry. These
awards cover many topics such as Health & Safety, Management, Other Initiatives etc.
Out of a total of more than 200 applications put forward CEMEX Halkyn gained a
\'Highly Commended\' Award for the System under the heading of \'Other Initiatives\'.
The application was put forward by Michael Ripley, Quarry Manager.

When a mineral product is extracted, crushed, screened or handled small fragments
generally below 75 microns particle size are released into the surrounding
environment. The heavier particles generally above 20 microns settle out in the
vicinity of the emission source. Wind and air disturbance can influence settlement.
Particles below 20 microns move around with the air currents and can remain
suspended for long periods of time. In still air conditions they will eventually
settle out. Fine particles below 10 microns are normally not visible in their
individual size and it is this fraction that is referred to as airborne dust
(assuming still air conditions). Respirable dust is generally below 10 microns.

To overcome the production of dust during the crushing, screening and handling
operations an Enviroflo/Nalco DustFoam system was installed. The foam is produced at
source with the introduction of water at a controlled rate together with compressed
air into a foaming chamber. This foaming chamber creates micro bubbles that can be
applied at strategic parts of the process that generate the majority of dust. The
micro bubbles are required to have a high degree of stability - i.e. they should not
break up when sprayed into the materials being handled; They should maintain their
shape until they enter crushers, transfer points, etc where they \'burst\' causing the
moisture they contain to be integrated into the product.

The use of DustFoam suppression systems therefore enables a considerably smaller
volume of water to be used than the conventional water or water and surfactant
systems. The NALCO DustFoam is totally inert, is an organic material and has no
detrimental effects on watercourses, cement manufacturing processes, bitumen coating
processes etc. A NALCO \"Material Safety Data Sheet\" is available for COSHH
requirements.

The contribution of this system to improving the environment at the quarry was
recognized by the Highly Commended Award which is recorded on the SafeQuarry
website.

For additional information, contact:

Tony Clark
Senior Projects Engineer
Enviroflo Engineering Ltd
10A Newton Court
Pendeford Business Park
Wobaston Road
Wolverhampton
WV9 5HB

Tel: +44 1902 784848
Fax: +44 1902 784242
Web: www.envirofloeng.com



Web Site: http://www.envirofloeng.com

Contact Details: Tony Clark
Senior Projects Engineer
Enviroflo Engineering Ltd
10A Newton Court
Pendeford Business Park
Wobaston Road
Wolverhampton
WV9 5HB

Tel: +44 1902 784848
Fax: +44 1902 784242
Web: www.envirofloeng.com