In this radio broadcast, a college geology department chairman explains that very few students currently entering college are choosing to study geology. He points out that most high schools teach little or no geology,...

The process of earthworks is to excavate the existing land to a suitable level so that road construction may begin. The earthworks can take the form of either excavation in the form of cuts or the construction of...

This paper compares the economic and productivity factors associated with bolt and screen, shotcrete and polymer lining underground rock support methods. It shows how these methods can make a safer and more effective way...

This lesson summarizes our dependency upon fossil fuels, pointing out that there are very few aspects of our daily life that are not impacted by their use. The discussion centers around whether these fuels could be...

This lesson provides an introduction to the use of natural gas as an energy source. Topics include its advantages (cleanliness, fewer carbon emissions), disadvantages (difficulty in transport and storage), sources, and...