May 31, 2018 12:00 PM, EDT

UPS Truck Explosion at Kentucky Facility Under Investigation

Lexington, Kentucky Fire Department via Twitter @LexKYFire

State officials are investigating a May 30 truck explosion at a UPS Inc. maintenance facility in Lexington, Ky., that injured two workers.

The workers workers were hospitalized with minor burns and possible concussions, and the explosion caused extensive structural damage to the freight facility. Six other employees received medical treatment as a precaution.

“I believe we’re extremely lucky,” Jason Wells, Lexington Fire Department battalion chief, told reporters May 30 outside the facility.

Maintenance was being performed on the truck when the explosion occurred, Wells said. All eight workers were conscious and talking when they were transported for medical care.

Investigators with the Kentucky Labor Cabinet are looking into the incident, Jarrad Hensley, the Cabinet’s spokesman, told Bloomberg in an e-mail.

UPS Inc., headquartered in Atlanta, provides letter and package delivery, alongside transportation, logistics, and financial services in approximately 220 countries and territories. UPS ranks No. 1 on the Transport Topics Top 100 list of the largest North American for-hire carriers.

UPS couldn’t provide further details during an ongoing investigation, Glenn Zaccara, a UPS spokesman, told Bloomberg Environment in an e-mail.

Like 26 other states, Puerto Rico and the U.S. Virgin Islands, Kentucky has a state plan for conducting its own worker safety investigations. It’s possible federal safety regulators at the Occupational Safety and Health Administration won’t investigate the incident.