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
Ricin was charged with manufacturing ricin in his dorm room, as well as the intent of "[using] the ricin on another undergraduate student with whom he had a relationship". Mohammed Ali from Liverpool, England was convicted after attempting to purchase 500 mg of ricin over the dark web from an undercover FBI agent. He was sentenced, on 18 September 2015, to 8 years' imprisonment. Ricin Ricin ( ), a lectin (a carbohydrate-binding protein) produced in the seeds of the castor oil plant, "Ricinus communis", is a highly potent toxin. A dose of purified ricin powder the size of a few grains