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 :I don't see any of that as needed here. In fact I see it as totally irrelevant, since it's not Chaco-style masonry; it's cinder blocks, and I can't imagine anything less similar to Chaco-style. If you have a specific suggestion please make it, but this article was highly vetted by peers and experts alike, and I don't see anything in your comments that leads me to think we've missed something important. I don't think it's necessary or even possible to determine the exact work-rate with any certainly. Theses figures are presented as estimates, and that's all they are. Having said that, 100 blocks per hour during 16-hour days would mean the building was completed in roughly 85 years, which is precisely the current academic consensus.  "