There has been an explosion at the grain elevators at the Halifax waterfront.

Police and fire crews have closed off the area because of concern about a second explosion.

Stored grain can be very volitile stuff.
There is no word on injuries.
UPDATE: No known injuries. Four blocks have been evacuated and tourists on a nearby cruise ship have been asked to stay put as fire fighters try to bring the blaze under control and prevent more explosions.

Halifax was the place of the largest man made explosion prior to the A-bomb.
On December 6, 1917 the collision of two ships blew the north end of the city apart.

Around eight that morning, the Belgian relief ship Imo left its mooring in Bedford Basin and headed for open sea. At about the same time, the French ship Mont Blanc was heading up the harbour to moor, awaiting a convoy to accompany her across the Atlantic. A convoy was essential; this small, barely seaworthy vessel was carrying a full cargo of explosives. Stored in the holds, or simply stacked on deck, were 35 tons of benzol, 300 rounds of ammunition, 10 tons of gun cotton, 2,300 tons of picric acid (used in explosives), and 400,000 pounds of TNT.

1,900 people were killed immediately, the death toll later rose to over 2 thousand. 9 thousand were injured. 325 acres of the city were levelled.
Boston responded immediately with nearly a million dollars worth of aid and volunteer help.
To this day, Halifax provides the Boston Christmas Tree in gratitude.
Help also came from China, New Zealand and Britian.
You can learn more here.

Politically incorrect art
A Yukon artist has been kicked off Ebay for attempting to sell a parody of the ‘most wanted’ deck. The artist and Ebay received angry email from Bush supporters.