Air Crash Investigations (sometimes called Mayday) is really good. Most full episodes are available on YouTube. Sometimes I'll watch it before a long flight. :lol:

Another good resource is the United States Chemical Safety and Hazard Investigation Board YouTube Channel. It's primarily focused on hazardous substance incidents, but it's a really good resources and they take an indepth look at how incidents occur.

Air Crash Investigation is also one of my favourites, not least because they have such great examples of thorough investigation that goes way beyond the superficial levels. I also used to enjoy Seconds From Disaster, which has a similar theme of understanding the contributing factors. I used to watch both on National Geographic channel when I had Sky TV, but I don't have it any more.

Like you @Rachel, I am always on the lookout for documentaries that detail the contributing factors, especially when they highlight all the 'human' elements of people's values, decision-making strategies, personal agendas, biases, assumptions, and all those less obvious psychological factors.

Chernobyl is on my list - I have also heard good things about it. As Chris mentions, the USCSB content is also really worth checking out.
A couple of documentaries I have recently seen that I would recommend are:

Upper Big Branch - Never Again https://www.youtube.com/watch?v=0NYOBEQWIlg
The fact that this incident occurred (and 29 workers lost their lives), approximately seven months before Pike River explosion is still so shocking to me.

Fire in the Night - a 2013 documentary on the Piper Alpha disaster. I don't have a link for this, but I think it's still on Amazon Prime if you can't find it.

EU-OSHA also has a Healthy Workplace Film Award each year. You do have to hunt down some of these, but I have managed to find a few online
https://osha.europa.eu/en/healthy-workplaces-campaigns/awards/hw-film-award

Deepwater Horizon - Mark Wahlberg is always good to watch. The irony in this film is that they had just won an award for good H&S (there are lots of cute clues in the movie such as safe coffee cups) but they had no training and procedures to identify and respond to the scenario they were faced with.

I managed to (legally) download the 'Pike River' docu-drama when Prime first had it available in 2016. If anyone wants the link PM me. :)

Investigation of the Three Mile Island incident revealed some very interesting learnings, too.

Highly recommend Chernobyl and Deepwater Horizon.

Some of the ones I've found since the OP:

• Bhopal - a Prayer for Rain - massive gas leak from a Union Carbine factory in India - Latest movie not available on Prime in NZ ( :( )but a good doco is here: https://youtu.be/HsuUQzhP2Ds
• Fukishima: (nuclear)
• DeBruce Grain Elevator (dust explosion)
• Three Mile Island (nuclear)
• Tianjin Explosions and Investigation Here (mixed haz subs)
• Unstoppable (Chris Pine and Denzel Washinston) - based on a true story of a runaway train.(Google Movies)
• Sully (Tom Hanks): The story behind that awesome landing in the Hudson.(Netflix, Google Movies)
• Imperial Sugar Dust Explosion
• As mentioned before there are a massive variety of chemical -related investiagtions on the USCSB channel https://www.youtube.com/channel/UCXIkr0SRTnZO4_QpZozvCCA
• Graniteville Train Crash (Chlorine)
• Piper Alpha Doco
• Titanic - New Evidence Doco

Feel free to update with any others you've seen or want to see :)

My colleague has recommended "In a Flash" - the story of the Tongariro tragedy at Mangetepopo Hut. My colleague highlighted a few key points that stood out for him, including the fact that the group went out that day because they had 'nothing else to do' so they didn't need to be there anyway, and he said the teacher didn't want to try another route out because she had not yet been 'signed off' for it.

"This emotional, original drama tells the true story of the six Elim College students and their teacher who tragically lost their lives in a flash flood at Mangatepopo Gorge in April of 2008."
https://www.tvnz.co.nz/shows/in-a-flash

I urge caution on this specifc item. "In a Flash" is a reasoanble dramatisation, that tells a tale of how a day out can turn bad, however it isn't "the true story". It doesn't accurately reflect all or the actually events of the day. The fact that it doesn't align with the courts account of the events, or the Coroners findings or any of the recommendations is telling.

Interestingly, I think this event, the investigation and subsequent prosecution support your points in the discussion thread on the Liabilty / Prosecution of Officers.

I agree - I watched the programme over the weekend, and it was clear from both the director / producer statements and the content itself that it was not the full story, and any storyteller will always have a particular perspective to present. But it's an interesting example of some of the challenges we face when trying to understand and manager risk.

Would recommend one of the Piper Alpha documentaries, I know there is one on YouTube.
The Chernobyl series was amazing and it did bring home the impact on people's lives.

The US Chemical Safety Board has videos of investigations they carried out. The links are posted at:
https://www.csb.gov/videos/ I will try to find some clips to use in the two occupational health and safety papers I'm teaching at Victoria University.
And the book about Chernobyl is brilliant.

Devil’s Dust
It’s about the Killer Company, James Hardie.
To access it, you’ll need a VPN and the “Tubi” app