Scott County's first silica sand mine opened 30 years ago, on a plot of land between Jordan and Shakopee. But after ten years, due to a lack of demand, it closed.
Fast-forward to last month, when Shakopee Sand LLC — a different company mining the same spot — abruptly shut down the mine until further notice. Lower demand for frac sand in the oil and gas industries is to blame, according to a letter Shakopee Sand's parent company, Fairmount Santrol, sent to the county on June 29.
"While these decisions are difficult and have been made with great care, they are absolutely necessary to safeguard Fairmount Santrol's long-term sustainability," the letter said.
Fairmount Santrol is headquartered in Ohio, and has facilities throughout the United States and abroad. To city and county officials, Shakopee Sand appeared healthy.
The facility's first shipment went out in September 2013. That same year, the mine's annual report showed a positive outlook.
"In 2014 sufficient sales are anticipated to support full production of the facility throughout the year," the report said.
Across the industry, it was a record year. In Shakopee, the facility operated at full capacity, said Aaron Scott, Fairmount Santrol's Northern Area Surface Mining Manager.
But the silica sand industry doesn't exist in a bubble. Silica is used in products as diverse as light bulbs and toothpaste, but in recent years has experienced strong demand for its use in hydraulic fracturing ("fracking"), a process in which the sand is blasted into shale to release oil and gas. With oil prices down, there's less demand for silica sand.