P&Q University Lesson 3- Geology | Pit & QuarryJun 10, 2015 . Sources of aggregate, such as sand and gravel and rock for crushed stone, were . Humans have used rocks for millions of years, and these rocks are geologically classified according to characteristics such as mineral and chemical . Crushed stone, sand and gravel were formed by geologic processes.are chemicals used in crushing rock to gravel,Safety Data Sheet Solms Crushed Line (Crushed Rock .Appearance/Odor: Loose granular rock, gravel, and silt mixture of varying size and color. No odor. .. SPECIFIC HAZARDS ARISING FROM THE CHEMICAL ... Crushed Line is used in many soil and construction applications, waste.
are chemicals used in crushing rock to gravel