Similarly, the male sand goby is relentless about guarding his eggs from predators, but even if he has plenty of extra food available, he will still eat about a third of his brood. Research into how he decides which eggs to keep and which to eat reveals that size matters: male gobies tend to eat the largest eggs.
The CSB report found that the permit-required confined space rule set by OSHA does not prohibit entry or work in confined spaces where the concentration of flammable vapor exceeds ten percent of the chemical's lower explosive limit, or LEL.
OSHA Compliance. Confined Space Entry and Non-Entry Rescue. Unsafe and poorly prepared entries into confined spaces are the cause of hundreds of deaths and thousands of injuries each year. In view of these facts, OSHA created CFR 1910.146 in 1993 and revised the document in 1998.