Municipal paper recycling started in Baltimore, Maryland, in 1874, as part of the nation's first curbside recycling program. And in 1896, the first recycling center opened in New York City. From those early efforts, paper recycling has continued to grow until, today, more paper is recycled (if measured by weight) than all of the glass, plastic, and aluminum combined. How Much Paper Is Recycled Every Year? In 2014, 65.4 percent of the paper used in the United States was recovered for recycling, for a total of 51 million tons.
A slate roof is a roof made from slate, a type of metamorphic rock which is highly durable, making it very suitable for roofing. It is most common to see slate roofs in regions where slate is naturally abundant, although slate shingles can also be shipped to other regions of the world.ike other types of roofing, slate has both advantages and disadvantages which should be considered before installing or repairing a slate roof. Slate is very close-grained, and it cleaves readily into thin tiles which can be used for roofing, flooring, and other applications.
In Australia this type of carpenter is called a roof carpenter and the term roofer refers to someone who installs the roof cladding (tiles, tin, etc.).. In the United States and Canada, they're often referred to as roofing contractors. The most common roofing material in the United States is asphalt shingles.