BSDeality had posted on another site that he used a 20 Ton log splitter in a vertical position to split the blocks. Such a creative idea! Something for everyone else to consider if they ever need to do this.
Please post some of your pics BSDeality if you get a chance !
Stop guess-timating. Learn how to estimate and make money! $$$
here's the splitter i used. I already had it for a few years cause of all the firewood i split. It worked pretty well. I got a few replies on another site some people thought i was doing something wrong cause i couldn't get the blocks to break in 2-3 hits with a 3# hammer. Well, as a one man show i go a little slow to make sure i don't smash my fingers (no work = bad). Splitting 150 of these was not fun job, so i decided to try the splitter and it worked great. I've got another 75 to do next week some time. I'll see about getting more pictures for sure, and possibly a video clip.
... edit... the maximum size file attachment is 15k and the photo i have is 56k... so i turned the quality waaay down to shrink it to 14K...