There was or still is a drop hammer called the terminator. I have seen them on wheel loaders and excavators

Yep that sounds like a Drop Hammer Attachment to me.

I have a suggestion. Why don't you take a photo of it and post it on here?
Trying to figure out what you are talking about is drawing a total blank from me and my friends.

metsoman;11625 said:
Hi!

At work, we use excavator mounted tools like pulverizers, scissors etc. to crush the slag and iron/steel/slag slabs and splatters so that they can be fed in to the mill as raw material again.
Among them, we have this one special tool for the excavator. I