1948–1989 Magnesite, blocks of flats and a museumMagnezit, panelové domy a múzeum

Under communism the valley was industrialised around magnesite, but the plants were built at Jelšava and Lubeník, a few kilometres downstream, not in Revúca itself. The town got blocks of flats, a hospital, schools and administrative offices, while its own manufacturing stayed small. The state also took the school of 1862 firmly into its official story of the nation: the two buildings were protected as national cultural monuments and turned into a memorial and museum of Slovak education. That much of the period's history-writing has comfortably outlasted the period.Za socializmu sa dolina industrializovala okolo magnezitu, závody však postavili v Jelšave a v Lubeníku pár kilometrov nižšie, nie v samotnej Revúcej. Mesto dostalo panelové domy, nemocnicu, školy a úrady, kým jeho vlastná výroba zostala malá. Štát si zároveň dôkladne privlastnil školu z roku 1862 do oficiálneho rozprávania o národe: obe budovy vyhlásili za národné kultúrne pamiatky a spravili z nich pamätník a múzeum slovenského školstva. Práve toto z vtedajšieho písania dejín svoju dobu bez problémov prežilo.