The ban came into effect in the early 1970s during a recession.

The first ban on its use came in 1970.

Then the 1986 ban comes in, and we get more case law.

For large stores, the ban will come in by 2012.

The ban would come into effect from April 2007, when the samples were given for testing.

The ban came as a result of pressure from environmentalists.

Then the ban has come to its end, and recapture is possible.

The temporary ban, for at least a year, came into effect on March 1, 2011.

Then the ban suddenly came down late last week.

The ban will come into force at the beginning of next year if it is not overturned.