BURIED ALIVE

1. https://www.popsci.com/article/science/how-long-could-you-survive-coffin-if-you-were-buried-alive/
2. https://www.businessinsider.com/how-long-could-you-survive-if-buried-alive-2013-10?IR=T
3. https://www.inverse.com/article/7543-how-do-you-die-when-you-re-buried-alive
4. https://www.medicalnewstoday.com/articles/320501#symptoms
5. https://www.medicalnewstoday.com/articles/ph-of-blood#symptoms-of-changes
6.https://ethanolrfa.org/wp-content/uploads/2016/02/Module-2-Handout-How-Inhaled-CO2-Affects-the-Body-%E2%80%93-Fact-Sheet.pdf
7. https://www.inogen.com/blog/signs-your-loved-one-may-not-be-getting-enough-oxygen/
8. https://en.wikipedia.org/wiki/Hypoxic_hypoxia
9. https://io9.gizmodo.com/heres-how-long-you-can-survive-after-being-buried-aliv-1456805375
10. https://www.sciencedirect.com/science/article/pii/S0160412018312807