This is difficult there is only one answer on Google and it's on a private web page.
The question is: where were the bricks made because they were very tough/durable
clue:they wereimported , the brand name is the same as the place they were made ,
Clue 2 the places local nickname is "Accy"
clue 3 the have a Soccer team known as"Accy"Stanley

I hear an echo.

Here the question echoed here.

Accrington Brick

Of note, several other places claim credit for partial provision of the ten million or so bricks used to construct the Empire State Building.

The entry is on this page:
http://www.accy.net/framepge.htm
Under "Industries"
Rest of the site worth a look around plus lots of links elsewhere
I used to live near here.