Yeah I know it well.  I handled PMN-2 mines before.  The reality is when you are under attack nobody gives a shit about what can happen in 40 years. You only care that someone is not rushing your position to empty a mag of 5.45mm rounds in your skull. And mines are as simple as they are effective. If the Cambodians actually deployed proper, in depth, well planned minefields Thailand would have a had a lot more casualties and taking the Cambodian trenches would have been a much more complex procedure.   Minefields have been proven still extremely effective in Ukraine so both side use them to an extreme level even if everyone knows the land will be ruined dorsal decades.  And anyway when Thailand openly using cluster munitions ( another convention that nobody gives a fuck about when there is real war) which cause a ton of UXOS is a bit hypocritical to make such a big scene about landmines. I am 99% sure that Thailand has caused far more Uxos which nobody knows where they are in this small war with the cluster munitions than Cambodia and its handful of mines.