If you had any doubts about the meaning of the multiplicity of terms used to hold up the roof of a mine, go no further than the Dywidag-Systems International site. Here you will find figures, diagrams, and specifications for every type of roof support product, from friction stabilizers, through cable bolts, extension bolt, fiberglass bolts, and rebar rock bolts to mesh and plates. They have a brochure for each product where you can find even more information.

The company appears to have grown since 2004 by purchase of other suppliers including operations in Canada, the United States, Mexico, and Australia. And now they can rightly claim: “DSI is global market leader in the development, production and application of mining products. Keeping in line with its strategy "Local Presence - Global Competence" DSI has over 1,300 employees worldwide with operations across Europe, Africa, Asia-Pacific and the Americas.”

The site is beautiful. And even more fun to spend hours browsing through the international sites. I particularly liked the site with this picture on the “front page”. I wish I could get a huge version to hang on a home wall. But the others are almost as good and worth an art-walk, interest-amble tour.