An explosion at a Menlo Park business left one man dead and another worker with an ear injury Friday.
The explosion happened at Membrane Technology and Research on Willow Road around 4:15 p.m. Fire and hazmat crews responded to a report on an unknown type cylinder explosion.
Emergency crews said two people were injured in the blast and as many as a two dozen others were were forced to evacuate.
Employees were reportedly transferring methane gas and something went wrong.
The man who died has been identified as Adrian Martin, 56, of San Jose.
A second worker was taken from the scene after suffering an injury to their eardrum during the blast, according to Menlo Park fire chief Harold Schapelhouman.
Schapelhouman there was no threat or risk to any members of the public outside the building.
MTR works on something called gas separation technology. It's website says it serves the petrochemical industry.