If you want to learn more about the mines in Camobida I highly recommend the low-budget documentary Until They're Gone[0], which features a small human-based mine removal effort promoted by Landmine Relief Fund[1]. I read an article in the Economist a couple years about the lingering impacts of mines and ordinance in Cambodia, and it struck me heavily and I looked up more information and came across those. It's horrible that all these ordinances are still maiming people decades after a war that their country was hardly even involved in, but there's also a lot of exciting work and progress being made. A mine-free Cambodia really is possible, and in not that many years!

[0]http://www.untiltheyregone.com/

[1]https://www.landmine-relief-fund.com/