Windscale Piles
... that while the filters added to the chimneys of the Windscale Piles were mocked as "Cockcroft's Follies", they prevented what might have been a disastrous radioactive accident?
... that while the filters added to the chimneys of the <b id="mwAgM"><a href="./Windscale_Piles" id="mwAgQ" rel="mw:WikiLink" title="Windscale Piles">Windscale Piles</a></b> <i id="mwAgU">(pictured)</i> were mocked as "<a href="./John_Cockcroft#Cockcroft's_Folly" id="mwAgY" rel="mw:WikiLink" title="John Cockcroft">Cockcroft's Follies</a>", they prevented what might have been a disastrous radioactive accident?