Woodburytype process, lectures and publications

I think you have the wrong end of the stick.

I'm not looking to CNC Lead or laser engrave lead, HSE & COSHH implications alone make it non viable.
I'm not looking to laser engrave epoxies or similar. I know from experience that when photoengraving by using a laser the process uses a greyscale image and works on a pixel by pixel basis so it's not continuous tone like a woodburytype or carbon print; although it does create an image through height relief similar to a lithophane.

Ideally what I would love to know it this, I like the work that Barett Oliver has done, I missed his lecture last year about his work with Chuck Close. I've have a copy of his book and I have read his book. I was wondering if anyone attended his talk or recorded it last year as I was unable to attend it. I've contacted the organisers of the talk and they unfortunately did not have a proceeding or book that accompanied the event and they did not record it themselves.

Thanks again to everyones input, I've already got a few gems from it.