Thomas Clarkson's Box. In an effort to gather hard facts about the Slave Trade, Thomas Clarkson visited many ports and went aboard the trading vessels. One of the first African trading ships Clarkson visited was called the âLively'.It was not a slave ship but its cargo had a powerful impact upon Clarkson.homas Clarkson. Thomas Clarkson is a local hero. A red haired man who stood over 6 feet tall, he spent his long adult life working to abolish the Transatlantic Slave Trade and slavery itself.
roof image by Eldin Muratovic from <a href='http://www.fotolia.com'>Fotolia.com</a>. Corrugated roofing is made of overlapping sheets of metal, iron, steel, aluminum or fiber glass, which are joined together at the sides.
Metal roof. A metal roof is a roofing system made from metal pieces or tiles. It is a component of the building envelope. One of the main disadvantages of a metal roof is the noise created when it rains outside.