ES&G (Environmental, Social, & Governance) policies are starting to become a common thing. They seem to have started at large corporations and they, in turn, drive their smaller partners to adopt similar policies. They want to present a face of sustainable and accountable practices, free from corruption, blah blah blah.
I work for a medium to small company and it has become part of my job to ask awkward questions of our vendors. Our corporate customers are pressing us on our practices, and we press our vendors as part of a "sustainable and ethical supply chain". Not all companies are well prepared to answer these questions, but some are. In general, the US lags behind Asia and Europe when it comes to this. At least in my industry. So that's a big caveat.
How do we know they're not lying? One tool is that independent third party auditors can assess a company and gauge its strengths and weaknesses. (Ecovadis is a name I've seen many times during these discussions, but there are others.) These auditors live or die by their reputations, so they have an interest in staying honest.
In the case of these nitrogen vendors (one of which is used by my employer), this is an easy ES&G win. The amount of nitrogen sold to executioners is vanishingly small, whereas we buy it by the tanker. It's definitely on the short list of awkward questions I would ask them.
The term 'greenwashing' will come up. And trust me, because I'm a cynical bitch with a hair-trigger bullshit meter, I've used it myself. But I'm cautiously optimistic that questions like this can move companies in a better direction. Part of that has to do with the look of confusion and horror when I visit vendors in deep red states and start asking questions about labor, safety, and the environmental impact of their operations. They don't want to do waste or emissions remediation, but they also don't want to lose our business. (I'm honestly enjoying this new direction my work is taking.)