In medical situations that can produce sharps OSHA does require their availability and use.
OSHA has no requirement for spore testing.
OSHA does not establish or require dress-codes. OSHA does require that each employer assess the hazards of the workplace and require the use of personal protective equipment suitable to the circumstances.
Yes
OSHA does not require education. It does require that employees receive training about the hazards to which they may be exposed during their employment and the means that are used (including their own appropriate actions) to protect them from those hazards.
OSHA has not established color code requirements for natural gas lines.
no
Nope.
Depending on the height.
Depending on the height.
OSHA requires that obstruction be visible. How they are made visible to vehicle drivers is not specified.
Six feet