pals. we have known how to make roman concrete for *centuries*. we rediscovered that technique in the 1750's. the reason we don't use it is ~cApiTaLiSm~
WGA Captain here, you have any questions, there’s plenty of us on here who can help answer them for you. Please don’t get your information from non WGA members or trades.
Also, a strike means ALL work stoppage. It’s scary but please stop trying to find loopholes to keep working