Rock breakers

Hello , this is Raj from india . My company has just taken up 3 mines (stone quarries) , we are looking for excavators for the same . We have been not able to decide as to what will be the idle size for our purpose , we have looked at excavators ranging from 120-220 . The place where these mines are have only service stations of Hitachi and JCB . Since this will be our first large scale mining operation we would like to get your input in . Please be kind enough to answer the following...

Rock breakers

Rock breakers