The Dangers of Oxygen

Oxygen is a very toxic gas and an extreme fire hazard. It is fatal in concentrations of as little as 0.000001 p.p.m. Humans exposed to these oxygen concentrations die within a few minutes. Symptoms resemble very much those of cyanide poisoning (blue face, etc.) In higher concentration e.g. about 20%, … Continue reading

Bricklayers Accident

I am writing in response to your request for additional information. In block number 3 of the accident reporting form, I put “poor planning” as the cause of my accident. You said that I should explain more fully, and I trust that the following details will be sufficient. I am … Continue reading