Should be something useful in the books section of the data dump on ethanol. Probably nothing on squish (rosin)
Ton of info here on both.
Search around here for QWET and “salad spinner” for ethanol.
Eg start here Washing Machine "Salad Spinner" tek and don’t forget to follow the links under the first post.
Combining the two by winterizing then decarbing rosin for carts would definitely get you usable carts. Probably not commercially viable in most places.