In the culmination of months of increasingly bitter negotiations, Canadian National Railway Co. and Canadian Pacific Kansas City Ltd. locked out 9,300 engineers, conductors and yard workers after the parties failed to agree on a new contract before the midnight deadline.

Here are the latest developments on the rail stoppage (all times are ET):

1. 
   National rail shutdown begins as employees locked out at both major Canadian railways
2. 
   51 years ago, a railway strike led to the most 'explosive' alcohol-fuelled 'rampage' on Parliament Hill

7:29: Many arrived at stations along GO Transit’s Milton line only to learn the rail work stoppage would upend their commute.