Smoke concerns grow in Los Angeles as Boyle Heights warehouse blaze continues to smolder and firefight enters 4th day

Firefighters faced renewed challenges Saturday at a large Boyle Heights cold storage facility fire, where conditions remain highly complex as Mayor Karen Bass declared a local emergency to support response efforts. The fire was first reported on Wednesday afternoon at the 500,000-square-foot Lineage Big Bear facility at 1400 S. Los Palos Street, which is used to store frozen foods. “The best way to describe this is like a giant cooler,” said L.A. Fire Chief Jamie Moore, who added that the structure was built with corrugated steel walls filled with dense foam insulation and reinforced interior steel panels.  The building also used ammonia in its refrigeration system to maintain extremely low temperatures for frozen food storage, which may have fueled the fire on its initial day of burning. “Imagine your refrigerator having a fire.

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