the material to be crushed is fed in

  • 131ancient Greek civilization — ▪ historical region, Eurasia Introduction       the period following Mycenaean civilization, which ended in about 1200 BC, to the death of Alexander the Great, in 323 BC. It was a period of political, philosophical, artistic, and scientific… …

    Universalium

  • 132Asphalt concrete — Asphalt concrete. As shown in this cross section, many older roadways are …

    Wikipedia