Below are a few useful links to some relevate websites:

www.qsrmc.co.uk.co.uk/register.php?regionid=21

www.buildingtalk.com/news/bmt/bmt000.html

www.theglazine.com/pages/awardsDec03.html

www.constructionline.co.uk/static/html/static_page/Home.htm

www.sammouldings.co.uk/news_item13.htm

www.british-aggregates.com/documentation/doc05.pdf

www.qpani.org

www.mcafeepropertiesandmortgages.com

www.hseni.gov.uk

www.hseni.gov.uk/quarries_2.pdf

www.4ni.co.uk/91882x516x24_white