This sign advertising the former grocery chain giant hangs in the Lynn Museum.

Jourgensen: A building with a bloodline

Engage your imagination and you hear steel crash onto concrete and workers calling out instructions as you stand in the J.B. Blood building's former loading dock. 

The building with a long Lynn history has a new lease on life as a high school. The $30 million renovation turned a gritty industrial monolith on Wheeler Street into a bright, airy place where charter school students can learn. 

The renovation left the loading dock untouched and unused. It's heavy steel roll-up doors are just feet away from the commuter rail tracks and the dock's freight elevator is big enough to hold a compact car. 

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