Eaglecraft The Masonry Heater Association will be building a masonry heater in a couple of weeks at the World of Concrete Convention on Feb. 5, 2013, in Las Vegas. I signed up by contacting Dick Smith at the Masonry Heater Association (MHA). They have a website. I think it is a week long type of convention having to do with concrete and masonry.You don't have to sign up for the whole convention. Las Vegas is about 9 hours away from me. You might be a little closer. I don't know if they really construct it or pretend construct it since it has to be torn down anyway. How convenient is that - they are building the exact heater I want to build - and it isn't that far away. It even corresponds to my day's off. I'll be there ready to learn!