The name Chloe is of Greek origin. The meaning of Chloe is young green shoot, blooming. Chloe is generally used as a girl's name. It consists of 5 letters and 2 syllables and is pronounced Klo-ee.
ballast - any heavy material used to stabilize a ship or airship. material, stuff - the tangible substance that goes into the makeup of a physical object; coal is a hard black material; wheat is the stuff they use to make bread.
The engineers were laying tracks through the Indus River Valley in present day Pakistan. They searched the area for stone to make ballast. Ballast is crushed rock placed around railroad tracks to drain water from the path of the train.