“Mining Metal” is a monthly column from Heavy Consequence writers Joseph Schafer and Langdon Hickman. The focus is on noteworthy new music emerging from the non-mainstream metal scene, highlighting releases from small and independent labels — or even releases from unsigned acts. Like many, I’ve spent much of the last month practically hermetically sealed-in to my domicile, just to avoid too much Pacific Northwest wildfire smoke from clogging my already-punished lungs. Extended isolation leads to eccentricity, and this month’s metal selections skew toward the insular. Expect progressive and cavernous odes to hyper-niche sounds, perfect for deep headphone listening. Of course, there’s a little old-time rock ‘n’ roll to buoy spirits in darkening times and earlier sunsets, but as autumn rolls ...