If you drive the northern stretch of SR-36 with any regularity, you’ve seen the remains of that old stone building. That’s right, the picturesque, castle-like edifice off the highway’s west side, about a mile north of Stansbury Park. Chances are it catches your eye most every time you pass it. And even if you’re not a history buff, chances are you spend at least a moment of your commute wondering about it.
It’s got to be old, you tell yourself — pioneer era probably. But what was it? Who built it? And why was it abandoned?
Every old building has its story, and the Grantsville Woolen Factory is certainly no exception. Situated near the Benson Grist Mill in the historic heart of Tooele Valley, the 143-year-old building is one of the county’s most significant cultural treasures. But like the structure itself, the factory’s story isn’t completely intact.
The factory was a product of pioneer ingenuity in an era of extreme independence, when Mormon leaders encouraged pioneer communities to become as self-sufficient as possible. In the early 1850s, LDS Church President Brigham Young began counseling towns to build woolen factories. By 1857, several factories had been established in Salt Lake and Utah valleys. The most notable was the Provo factory, which was the largest woolen factory west of the Mississippi River.
Young brought the same counsel to Tooele Valley in 1867 when he encouraged a Grantsville congregation to improve their sheep breeds by building a factory of their own. Construction of the Grantsville Woolen Factory began the next year, financed by several prominent Tooele County citizens. The building was located in old E.T. City along Adobe Rock Creek, a sizable waterway fed by a network of brackish springs.
Bishop John Rowberry was president of the company, with James Wrathall as factory superintendent and John Forsyth as machinery consultant. Various staff, including Forsyth, settled at the adjacent Lone Rock Ranch across from Adobe Rock.
The one and a half story factory measured 49-by-89 feet. Its walls were constructed of fitted blue limestone boulders cut from the nearby Oquirrh Mountains. Its upper room featured louvered windows and was supported with thick beams hewn from Oquirrh timber. It was accessed via two outside staircases. Twenty-five large windows on the lower story facilitated natural lighting, and machinery would be powered by a dam built across the creek.
It was reported that the building’s completion was marked on Aug. 20, 1869 by an epic, all-night party featuring talks from local leaders, a substantial supper and dancing. Music of excellent quality and in any desired quantity was provided by bands from Tooele and Grantsville.
The factory was officially dedicated on April 29, 1870 by Elder John Taylor of the LDS Church’s Quorum of the Twelve Apostles. In the highlight of the event, the factory’s 350 spindles were briefly set in motion. The future of the Grantsville Woolen Factory couldn’t have looked brighter.
But according to the 1961 publication of the “History of Tooele County” by the Daughters of the Utah Pioneers, the factory operated only 10 months before closing. That’s also when the details get sketchy.
Some blamed a scarcity of raw materials for the factory’s failure. Some blamed the muskrats that constantly bored through the dam, hindering water wheel operation. Others, including Forsyth, said parts of the structure were built on quicksand. Each of these factors seems plausible. The “History of Tooele County” notes that pioneer sheep flocks were indeed small and their fleece light. Muskrats still menace the waterway today, and the soil along the entire channel is generally loose.
Whatever the reason for the decline in production, it was the quicksand that ultimately proved fatal. It happened, of all times, during a visit by the LDS church’s first presidency and other church leaders in late 1870. According to the book, the dam gave way as the men were feeding their horses, unleashing an “avalanche of water, seething, boiling, foaming and lashing with terrible fury from either bank of the yielding dam, in its rapid passage down the heavy grade.”
The dam was never rebuilt and the factory’s machinery was transported to the Provo factory in 1872. Little is documented about the history of the factory after it closed. The “History of Tooele County” briefly mentions that the structure was later repurposed as a fishery, a dairy, a factory manufacturing overalls and even apartments.
Eventually the structure was completely abandoned. The roof was removed and used to remodel the historical adobe house still standing at Lone Rock Ranch. The wooden columns gave way and the narrower tops of the walls began to crumble. The Forsyth cabin was moved to the Benson Grist Mill complex in 1986, and E.T. City itself was eventually absorbed into Lake Point.
The entire area, including the factory, the ranch, and Adobe Rock, is believed to have been acquired by Kennecott Utah Copper in the 1960s, although the exact acquisition date is unknown. Erda resident DeLaun Blake and his wife Wilhelmena said they leased the ranch to Kennecott from approximately that time to the mid-1990s. They were the last occupants of the adobe ranch house. Blake, 91, has fond memories of living next to the factory and is still amazed at the design.
“[The walls] are beautifully straight,” he said. “The amazing thing about it is they didn’t even have a cement foundation. They put mortar on the ground, put rocks in a maze with mortar that wasn’t straight cement. You look at it today and its absolutely straight walls-no bends or bows in them at all. You’ve never seen such great walls in your whole life.”
Blake recalled planting rainbow trout in the springs, lending credence to the creek’s viability as a fishery.
“It seems like they grew an inch per month,” said Blake. “I used to throw the line in the morning, catch about a 12-inch trout and eat it for breakfast. Boy, it was nice.”
Kennecott — now Rio Tinto — continues to lease the land for agricultural purposes. While the company has no specific plans for the factory ruins, Kennecott Asset Manager Jeff Lachowski said the company is mindful of history and is interested in preserving the site. Public access to the ranch and factory site is restricted. However, the restored Forsyth cabin at the Benson Grist Mill is publicly accessible.
Large carp have now taken over Adobe Creek. On a clear afternoon last week, dozens of them cruised the shallows on both sides of the broken dam. The factory’s vacuous rectangle was empty, save for the fallen beams. Wooden frames lined many of the glassless windows. Walking along the thick stone perimeter, one laments the factory’s premature demise.
Would the factory have continued to operate had the dam not broken? Would it be occupied by some other enterprise? Would there be more of it left? No one will ever know, but one thing is certain. The stately skeleton of the Grantsville Woolen Factory remains a solid testament to Tooele County’s pioneer spirit.