Saggar kiln debris. Modern saggars are made of alumina ceramic, cordierite ceramic, mullite ceramic silicon carbide and in special cases from zirconia. By far the largest number of UK pottery manufacturers were based in and around Stoke-on-Trent in a region known as The Potteries. Their businesses, locally known as potbanks, fired their wares in distinctive bottle ovens. At the turn of the twentieth century over 4,000 of these were in use, although by 2014 only 47 survive, all of which are no longer in production but are listed buildings. The saggars were used for the biscuit and the glost firing. They
Craft unionism unions and from the Socialist Labor Party of America to form the Industrial Workers of the World (IWW), which aimed to organize all workers, regardless of craft, nationality, gender or race, into one big union. In practical terms the IWW pursued organizing on an industrial basis. In at least one sense the IWW practiced (and practices) the most egalitarian form of industrial unionism, organizing and accepting membership of workers in any given industry whether they are currently employed or not. The IWW also welcomed immigrant workers, minorities and women as equals. The IWW was successful in some cases, leading a