It is not always obvious how much transportation touches the lives of people. But the folks over at the National Stone, Sand & Gravel Association (NSSGA) can tell you for certain how important aggregate is to the construction of the paved surfaces on which we all walk and ride.
For those who don’t know, the term “aggregate” is used in geology to describe rock made of one or more minerals. According to NSSGA, each American uses about 10 tons of aggregates every year. Aggregates are used in road building, paint, cleaning products and probably even more things than the typical person even imagines – like Pokemon.