Garside Sands operates today as a significant part of Bardon Aggregates an Aggregate Industries Ltd Business, providing specialist graded silica sands for diverse markets such as sports, water filtration and industrial applications. Silica sand has been quarried in and around Leighton Buzzard, Bedfordshire, for over 100 years.
http://www.garside-sands.com/
http://www.esa.int/SPECIALS/Mars_Express/index.html
http://www.hillier-landscapes.co.uk
http://www.sciencemuseum.org.uk/visitmuseum/subjects/space.aspx
http://solarsystem.jpl.nasa.gov/planets/profile.cfm?Object=Mars