2003 ricin letters lethal dose of ricin in humans provided that exposure is from injection or inhalation. Ricin is easily purified from castor-oil manufacturing waste. It has been utilized by various states and organizations as a weapon, being most effective as an assassination weapon, notably in the case of the 1978 assassination of Bulgarian dissident Georgi Markov. On January 4, 2004 new federal transportation rules took effect which directly affected the over-the-road trucking industry in the United States. The rules took effect with a 60-day grace period and were aimed at reducing fatigue related accidents and fatalities. Called the most far-reaching rule changes
London Buses route 7 and London Bridge station. This route disappeared later in 1916 owing to Wartime shortages, but reappeared on 30 April 1917. During the 1920s, route 7 was extended to Acton and a 7B was introduced as a Waterloo station to London Bridge, Monday to Friday peak hours only service via Holborn. On 1 December 1924, a new system of route numbering on London buses came into force under The London Traffic Act 1924. This gave the Metropolitan Police responsibility for bus operation and route numbering. Route 7 remained unchanged; the 7A was renumbered 107, and the 7B to 166. Short workings