the picture shows not only glue but also thick layer of some sort cement leveler or mud base that's why i would go dry or you will have to deal with lots and lots of thick slurry, and the cement layer looks grainy and soft so it will clean the glue off diamonds without clogging.
Im suggesting this option assuming that you are equipped with vacuum system like Ermator or Pulse-Bac or similar.   

On Wed, Nov 29, 2017 at 6:31 PM, Stuart Rosen <mail@stoneshine.com> wrote:
We like our abrasives-my process might be a little different if I saw the floor in person.  I agree with Darek just to add we might start with 30 grit 5 seg hard metal bond diamonds wet.  
We would finish close to the same.

On Wed, Nov 29, 2017 at 3:10 PM, Pat Staples <cpstaples@msn.com> wrote:
nope, what you see is what you get. Some of the floor is exposed on top but nothing that would indicate what it is. I know how I'm going to handle it if they want to pay the price. LOL that's why I said let's have some fun with this

From: sccpartners@stoneandtilepros.simplelists.com <sccpartners@stoneandtilepros.simplelists.com> on behalf of joyce@thepersonaltouchsolution.com <joyce@thepersonaltouchsolution.com>
Sent: Wednesday, November 29, 2017 3:06:30 PM
To: sccpartners@stoneandtilepros.simplelists.com
Subject: RE: Ceramic/marble tile
 
Is there any way to look at an edge, floor register, anything that would show you the edge of the tile?  It makes a huge difference if that is marble or ceramic.   Porcelain you could treat like the marble but the ceramic is a different story.

President
Mobile: 309.251.3192
 
 


-------- Original Message --------
Subject: Ceramic/marble tile
From: Pat Staples <cpstaples@msn.com>
Date: Wed, November 29, 2017 12:54 pm
To: "sccpartners@stoneandtilepros.simplelists.com"
<sccpartners@stoneandtilepros.simplelists.com>

Let's have some fun with this, looking to see what some suggestions would be to restore this 200 square foot elevator Lobby 75 year old ceramic/marble tile coated with carpet glue and cement

 
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Rockland Stone Restoration
845-323-7333
www.rocklandstonerestoration.com