On: How Has Roman Concrete Lasted for Millennia? 1,900-Year-Old Latrine Offers Clues

[iamflimflam1]

I hope you’re prepared for a huge amount of bike shedding… but if we pick this color, we can save a couple of dollars…

[ErroneousBosh → iamflimflam1]

It's going in a suspended ceiling so it has to be purple.