Japanese crossword «Trolley»

I don't see it at all

I see a minecart with weird patterns.
Quite interesting solve, had to work all around at once.

Good

Nice solution process, but the pic is very unclear

Oh, I get it -- like in a coal mine.

Yes, an ore trolley.

Ore trolley, huh? Never heard that term before. Guess I actually learned something today.

Fun

Very clever! Well done!