I think the picture answers your question really.
No it doesn't. It's her walking down a dirt road beside a mine field. Now if she was walking through it with a metal detector... like the men and women are doing out in Afghanistan at the minute.
She was never in any danger when doing her mine bit. In fact, I think the only Royals who've ever been in any danger (however slight) are those that have actually served in the armed forces and seen combat.
Which is a damn sight more than any of our most recent slimy politicians or their kids have ever done. You think El President Blair would let his kid go to the front line of an illegal war he started? Hell no.