The green lichen seemed to melt off the headstone as Sarah Insalaco sprayed it with water. She used a plastic scraper to scrub clean the gray granite.
"There they are," Insalaco said as the carved names became visible. "This is Martha and Torsten Lee."
The Lees were buried together near the end of the 19th century in Pioneers and Soldiers Memorial Cemetery, off Lake Street in south Minneapolis. Their headstone was just one of dozens being cleaned and reset this week by an AmeriCorps group working under the oversight of Northern Bedrock Historic Preservation Corps, a nonprofit headquartered in Duluth.
From May to October, the crew will don their bright blue hard hats, rain or shine, to work on a number of eight-day preservation projects across Minnesota. Part of the program's goal is to teach participants, who range in age from 18 to 25, the trade skills needed to maintain and repair historic places and structures.
"The pool of tradespeople that does that work, it's dwindling. They're moving out of the workforce and retiring," said Rhea Harvey, operations director at Northern Bedrock. "We're trying to collect this knowledge and pass it on."
At Pioneers and Soldiers cemetery, that means resetting, edging and cleaning headstones. Armed with a water pump, her scraper, a bristle brush and D2 — a commercial biological solution that removes stains from mold, lichen and other natural substances — Insalaco cleared away decades of dirt from the Lees' monument.
"It's really pretty easy if you know what to do," she said.
A few yards away, crew leader Haven Epstein and AmeriCorps participants Addison Galagan, Daquan Johnson and Mahoo Ya repositioned the shiny black stone marking Ole Dahl's final resting place. Galagan used a crowbar to prop up the granite while the others shoveled pea gravel beneath it to raise the half-sunken memorial. Before moving to the next gravestone, they checked to see that Dahl's was level, plumb and in line with the rest of the row.