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 Waterloo station Rail announced that platforms 20–24 would be fully refurbished in order to increase capacity at Waterloo by 30%. Communications manager Kevin Parker stressed that the international platforms were only designed to cope with six trains per hour, well below the expected capacity for commuter services. The platforms closed in September 2017 for the works, with a revised timetable to be published the following year. Waterloo station was to be the central London terminus for the proposed Heathrow Airtrack rail service. This project, promoted by British Airport Authority Limited (BAA), envisaged the construction of a spur, from on the Waterloo to