If you're referring to that wage gap crap, it's been debunked time and time again.
There's a big difference in what men and women earn at the end of the day (although in the studies I've seen there's a few percentage points of difference that can't be explained). This is often explained with women making different career and family choices. If we accept that reasoning, then if a difference is the result of choice, then it's acceptable. That makes me wonder about one of your other points:
Where are the employment campaigns for more women in dangerous or hard labor jobs?
Why do you think this is a problem? Noone's forcing men to work in dangerous jobs, right? Just like women "choosing" jobs that pay less than men's jobs, men choose dangerous jobs. Women choose one way and get paid less, men choose another way and have more work accidents.
Personally I'm against both situations and I don't think that choice (or the illusion of it) magically solves every problem.
Lastly, I think you should pitch your idea of hiring women into these male-dominated, dangerous jobs. I'm sure women are genuinely wanted by the guys there, and they'll be accepted as equals, right?