Amateur carpenters who have laid out the cuts in a stair stringer (the zig-zag structural support for the steps) know the queasy feeling that bubbles up at the prospect of this job. There’s the simple ...
DULUTH — When the Superior National Forest needed to replace a quarter-mile-long wooden stairway in the Boundary Waters Canoe Area Wilderness, its method intentionally evoked the past. Crews worked ...
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