The Control of Asbestos at Work Regulations were amended in 1993 to require the replacement of all asbestos-containing materials wherever possible. Just a year before the end of the 20th century, a 1999 decision saw a total ban on the use and importation of chrysotile, which was still used until the 1980s and 1990s in construction materials and certain products. After the second millennium, in 2002, the "duty to manage" policy was introduced to provide additional protection against asbestos exposure in the workplace. A year later, in 2003, the Asbestos (Licensing) Regulations were again amended to ensure that the competent authority is informed of the details of any asbestos work requiring authorization, at least 14 days before the start of work.