Recycling one ton of paper can save 17 trees, 7,000 gallons of water, 380 gallons of oil, 3.3 cubic yards of landfill space and 4,000 kilowatts of energy-enough to power the average U.S. home for six months- and reduce greenhouse gas emissions by one metric ton of carbon equivalent (MTCE).
Slate is a fine-grained, foliated metamorphic rock that is created by the alteration of shale or mudstone by low-grade regional metamorphism. It is popular for a wide variety of uses such as roofing, flooring and flagging because of its durability and attractive appearance.
Slate is a rock that has many natural color variations including gray, blue, greenish-grey, dark red, black, tan and even purplish-gray. References to the color âslateâ most likely mean a medium-dark grey with blue undertones, because this is the most common color variation of slate rock. Keep Learning.