Whether or not women are in the same fields as men at the same rate isn't the issue. After all, most men aren't in traditionally held 'women's jobs' at the same rate as women. The issue of Feminism was that feminists wanted the same opportunities as men, at the same rate of pay for the same job as men, at the same level of respect as men.But not equally in the fields mentioned. As Pearl says, if you want equality GO BE EQUAL.
In other words, if a woman wants to be a coal miner, she should have that opportunity, and not have the door slammed in her face, or laughed at, because she's a woman. If she happens to be hired as a coal miner, pay her the same as you would pay a man for the same job. Give her the same opportunities to advance into leadership positions as a man would get. And give her the same level of respect that a man would get. No teasing her, bullying her or even sexually harassing her.