We were engaged in this interesting discussion about possible micro-explosions. As support for you opinion that the white sparkles could be an indication of such explosions you mentioned the craters that supposed explosions have created in electrodes during electrolysis.
Now I want to bring up to the surface this post: MFMP New Generation Celani Wire Test Shows Possible >10% Excess Heat?
where I suggest for a more modest mechanism to be the excavator of these pits. What do you think about it Eric?
At least axil must have been impressed, he promptly went ballistic abut monopoles and proton rays.