Given the context, I'd say the "mines" here are the devices that explode... Made in Sweden ( a country famous for its steel), and here the "maYd" must come from the specific accent of the person who's speaking/singing. And yes mines are tricky, hard to handle, you never know when they may explode...
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So why don't we just go directly in. Right up this route, straight in.
Yes, well, I see the captain
enjoys the road less traveled.