The following is a list of links to other media that may be of interest.
Willard Says.com One of a kind source for practical dredge information.
The World in a Grain: The Story of Sand and How It Transformed Civilization The gripping story of the most important overlooked commodity in the world–sand–and the crucial role it plays in our lives.
National Stone, Sand & Gravel Association Great source for aggregate industry information.
Pit & Quarry magazine Aggregate industry information.
Rock Products magazine Aggregate industry information.