Bullet Proof Materials By Kevin Helms, Josh Borrajo, Karan Kanagasabapathy, Raghid Mardini ENGR45, Fall 2011 SRJC.
Northern Light and Urban Trails - Mining Makes it Happen
How is glass made (2)
Natural Sciences and Technology Grade 5 Term 4: Planet Earth and Beyond Sedimentary Rocks (PPT 2)
