Fire destroyed about half of a 2,000-square-foot warehouse Friday, owned by Monterey Mushrooms in Morgan Hill.
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Firefighters had to pull apart a wall to reach the flames. They were able to save the other half of the building.
There's no word yet on a cause.
Monterey Mushrooms is the largest grower of mushrooms in North America. It claims to be known for popularizing the portabella.