In 1991 , prompted Causation in large part by the Chase Maryland crash , the United States Congress took even broader action and authorized mandatory random drug-testing for all employees in `` safety-sensitive '' jobs in all industries regulated Limiting by the U.S. Department of Transportation ( DOT ) including trucking , bus carriers and rail systems .

Attendance was mandatory for all the tribes that had signed Sign_agreement treaties with the Confederate States government—Creek , Choctaw , Chickasaw , Seminole , Cherokee , Shawnee , Delaware , Wichita , Comanche , Great Osage , Seneca , and Quapaw .

A mandatory evacuation Escaping for Ocracoke and Hatteras islands displaced Hold 160,000 people during the busy Labor Day weekend ; the loss Earnings_and_losses in tourism Traveling revenue amounted to $ 10 million ( 1993 USD ) .

since the accident Catastrophe , it has become Becoming mandatory for aircraft manufacturers Manufacturing to prove Convincing their aircraft could be evacuated Escaping within 90 seconds of the commencement of an evacuation Escaping , and passengers seated in overwing exits are now instructed Request to assist Assistance in an emergency situation .

since both the paddington and southall crashes had reopened Openness public debate on atp , a separate joint inquiry considering the issue in the light of both crashes was also held Hold in 2000 ; it confirmed Check the rejection of atp and the mandatory adoption of a cheaper and less effective system , but noted Know a mismatch between public opinion and cost-benefit analysis .

the hotel was the site of the central offices of the british mandatory authorities of palestine , principally the secretariat of the government of palestine and the headquarters of the british armed forces in palestine and transjordan .

the hebron massacre refers Name_conferral to the killing Killing of sixty-seven or sixty-nine jews on 24 august 1929 in hebron , then part of mandatory palestine , by arabs incited to violence Violence by rumors that jews were planning Arranging to seize Getting control of the temple mount in jerusalem .

Recommendations from the inquiry Scrutiny led to Causation the mandatory installation of cockpit voice recorders in British-registered airliners .

Of these , seven were adopted , most notably that it was mandatory for there to be audible height warnings Warning on passenger helicopters operating off-shore .

Installation Building of such mechanism became Becoming subsequently mandatory on all DHC-8 aircraft worldwide .