For large Safes we recommend using a specialist Safe company, For smaller Safes we can offer a waste removal service at a fair rate.
Small safes should be about half the size of the one in the picture.
The picture below is a perfect example of a large safe as mentioned you would need to contact a different company for this work.
Most safes have a concrete lining this is to help make them fireproof and more secure, unfortunately that makes it a big problem to melt a safe down that's the reason as mentioned why safes are banned from scrap yards.
Some safes are valuable and you may find a buyer on ebay it's always worth a try.