08/17/2012 11:13 am ET Updated Aug 17, 2012

Silo Collapses At Cement Plant, Rescuers Searching For Missing Worker (VIDEO)

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Miami-Dade Fire Rescue is working to recover the body of a concrete plant employee who fell into a silo when the roof collapsed Friday morning in Medley.

Titan Cement worker Pierre Mezidor, 58, fell between 50 and 100 feet, according to Miami-Dade Police, and the rescue crew was not been able to communicate with him or confirm any sign of life after the 8:30 a.m. collapse.

CBS Miami reported first responders were using rescue dogs to assist in the search as they tried to get inside the silo at 11000 NW 121st Way.

Authorities say a metal walkway between the collapsed silo and a neighboring silo has been damaged, making the adjacent silo unstable as well.

The rescue effort lasted all day and into the afternoon before becoming a recovery mission. Crews worked to lower a cab via crane into the silo, according to a tweet sent by WSVN's Sky Force helicopter, but bad weather halted the rescue efforts around 3 p.m., according to a tweet sent out by Miami-Dade Fire Rescue.

Police spokesman Roy Rutland said the incident was being investigated by MDPD's Homicide Bureau.

"Officials at Titan America deeply regret the incident and emphasize that employee safety is their primary concern," the company said in a statement Friday afternoon, according to NBC 6. "Reasons for the structural collapse are unknown at this point but the company plans to conduct an exhaustive follow-up investigation."