The verdict, handed down Monday, awarded $61.5 million to 24 plaintiffs who sued 3M over its role in inspecting the gas detection system at the northwest Houston facility.
It is the third verdict against 3M since litigation stemming from the explosion began. In November, a different Harris County jury awarded survivors $118 million.
The massive explosion at Watson Grinding on Gessner Road killed three people, injured dozens more and damaged or destroyed hundreds of homes when it ripped through the surrounding neighborhood in January 2020.
More than six years later, survivors are still pursuing their cases in court.
"It's David and Goliath, no doubt about it," attorney Rob Kwok, who represents plaintiffs in the litigation, said. "We speak for them. They stand no chance going up against them."
Federal investigators traced the explosion to a propylene leak that ignited when a worker turned on a light switch.
The U.S. Chemical Safety Board found the plant's gas detection and alarm system failed to alert workers to the dangerous buildup of propylene before the explosion.
In court, attorneys for the plaintiffs focused on 3M, which was responsible for inspecting the gas detection system. The attorneys argued the company failed to properly perform that work. The jury ultimately sided with the plaintiffs, awarding the 24 survivors $61.5 million.
Attorney Ryan Loya said the latest verdict sends a message as additional cases move toward trial.
"It tells 3M this case is going to continue to go on," Loya said.
Kowk added that the verdict "sends a clear message to 3M that Harris County isn't going to tolerate" a vendor coming into the county and doing only part of the job.
The attorneys said another trial is scheduled for October.
ABC13 reached out to 3M for comment following Monday's verdict but had not received a response as of Monday evening.
After the $118 million verdict in November, 3M told ABC13 it disagreed with the jury's decision and planned to appeal.
Because of the appeals process, it could be years before any of the money awarded by juries is ultimately paid to the plaintiffs.