Only 50Mb? All mine, bought in 1980, were 700Mb - about the same as a Data CD would be a few years later.
On top of a 2 horsepower spin-dryer.
I'm astonished at 'shards' - what on earth were the shattered platters made from? I'm remembering thick aluminium plate!
My staff did did a nice line in Gift Clocks.
Whenever a head-crash rendered a disc-pack useless, we'd dismantle it and fit each artistically-scarred brown disc with a cheap quartz movement. Wish I'd kept one :-(
Nostalgia isn't what it used to be.