1972 Solar Flare Caused Naval Mines to Explode

There are reports out this morning that a big solar flare in 1972 caused naval mines placed by the U.S. off the coast of Vietnam to explode.  

https://www.livescience.com/64062-mines-solar-storm-1972-vietnam.html

https://www.colorado.edu/today/2018/11/12/1972-solar-storm-triggered-vietnam-war-mystery

Background info: 

https://oraprdnt.uqtr.uquebec.ca/pls/public/docs/GSC418/F1929448428_Solar_Superstorm__Astronomy_Sept_2008.pdf

I remember this solar event.  It caused aurora near New York City: 

https://soldersmoke.blogspot.com/2009/09/carrington-flares-aurora-where-were-you.html