Mitch Brown jammed the blade of his loader into a two-story pile of snow outside Donner Ski Shop, the sports rental store he runs in Soda Springs. From there, Old Highway 40 toward bustling ski resorts was lined with walls of snow more than 20 feet high. “It snowed nearly 24 feet in 12 days,” Brown said recently. “We’ve been working 18-hour days to clear it.”