Anonymous ID: fa7492 April 5, 2020, 8:18 a.m. No.8693157   🗄️.is 🔗kun   >>3240

>>8692972

How about oxygen levels at that depth? As you go deeper, the co2 exhaled by people doesn't get evacuated unless there is a ventilation system ducting fresh air into the shaft. CO2 sinks, its heavier than air, unlike climate "scientists" would have you believe!