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 Bridge station by Network Rail. It has a ticket hall and entrance area with its main frontage on Tooley Street, and other entrances on Borough High Street and within the main line station concourse. It is one of two mainline London termini south of the River Thames, the other is Waterloo. The Underground station is on the Jubilee line and the Bank branch of the Northern line. Several London Buses routes, including 43 and RV1, pass the station; some via the bus station. River buses use the nearby London Bridge City Pier. London Bridge station was opened on 14 December 1836, making