A collection of geologic hazard photos from the NOAA National Geophysical Data Center (NGDC). Many of these photos were originally 35mm slide sets made available to educators and others. Now you can download them. Only problem is they are in TIF format, so you might want to convert them to JPG.
DYWIDAG-Systems International (DSI) is America’s leading manufacturer & supplier of specialist ground support products to the underground coal & metalliferous mining sectors. They also are one of the suppliers of hollow core or self-drilling soil […]