Wagonnet de mine/Förderwagen für Gruben/Mine wagon

Hy.
Look at www.minieresbunn.lu

First I feel I must apologize because I only speak English. I've been looking at this site using Google Translate but I don't think it does a great job so instead of using it to try to translate my message for you all, I'm thinking it would just be better to post in English. So here goes:

I'm looking for more information, specifically some dimensions or better yet drawings of these types of mine carts I found on this website.




There are a few more photos of this kind of wagon but I think these are enough to include here. Anyone have a drawing of these wagons or know where I can find one? Also, I thought this was the best place to post this question, but if there is a more suitable part of the forum please move this thread for me. Thanks for your time.

Best regards from New York,
Brian (Finster)