Latta Pavilion: Two Follow Ups. First, Tracking

When I began my series on Latta Pavilion and Radon, I put out a couple of emails to people in the business. The first reply  is from a highly qualified construction professional who works with building condominiums, townhomes, single family homes and large apartment complexes. I asked him how one would begin to track aggregate used in such a project as Latta Pavilion.
Here is his reply: 

The only way you would be able to track down where the stone came from is to know who the concrete subcontractor was on that job.  Then, you'd have to contact that subcontractor and get them to tell you who supplied them with the stone.  Then, contact that supplier and ask them where they got their stone during the period of time they supplied to that subcontractor and, most importantly, for that particular job, because a large subcontractor will have several jobs going at once.  And they may have an account with one supplier, but that supplier may ship to different jobs from different quarries depending upon the job location.  Then, and only then, when you have tracked down which quarry the stone came from, you can then find out which concrete subcontractors the quarry sold to.  Then, you'd have to contact those subcontractors and see if they could tell you if the stone they purchased from that quarry was used for slabs or flatwork (sidewalks).  If they can tell you specifically slabs, ask them on which projects those slabs were poured. 

Yes, it's some back-tracking, and alot of footwork.  But that's the only possible way I know that you could track down that sort of information.  I hope that helps!

Next, I also spoke with a certified Radon Inspector and asked for his overview.