Fire truck and ambulance sirens were heard across Hall County throughout the day and into the night Thursday, as county firefighters responded to five fires and a chemical burn call in a span of nine hours. No one was injured in the fires.

"It’s been a busy day," Hall County Fire Services spokesman Scott Cagle said.

The first fire call of the day, at 4836 Glade Farm Road, caused the most damage. A two-car detached garage caught fire at about 10:20 a.m., causing an estimated $100,000 in damage to the structure and contents, Cagle said. The fire was believed to have been caused by a battery charger that overheated while connected to a golf cart, Cagle said.

Other calls Thursday included:

• Shortly before noon, a delivery driver was flown to Grady Memorial Hospital after a tire containing tire-filling foam exploded at GCR Tire Center in the 300 block of Candler Road, spraying the man with foam. The chemical got into his eyes, and he was flown to the hospital’s burn unit. He was in stable condition, Cagle said.
• At 2:53 p.m., firefighters responded to a fire and explosion at Regency Recycling, a scrap yard on Fulenwider Road. Workers were crushing three junk cars when a battery that remained intact in one of the cars exploded. All three cars were fully ablaze when firefighters arrived.
• At 2:56 p.m., firefighters responded to the Mulberry Park subdivision off Ga. 211 for a grass fire caused by a fountain sparkler that had been lit for a birthday celebration. The fire encompassed a 30-square-foot area and did about $1,000 in damage to nearby homes, where some shutters partially melted, Cagle said.
• At 5:04 p.m., firefighters arrived at a grass fire encompassing approximately 1.5 acres. The blaze destroyed a vacant mobile home. The fire was believed to have started after the owner of the mobile home burned some leaves.
• At 7:05 p.m., firefighters responded to a grass fire at 3999 Hidden Hollow Drive that burned between two duplexes. Approximately $25,000 in damage was caused to vinyl siding and shrubbery. The cause of the fire remains under investigation.

Cagle said in addition to the fires, emergency workers ran a high number of wreck calls and assisted in the search for a missing person at Glade Shoals east of Clermont. At one point in the day, seven ambulances were running calls while fires burned simultaneously.