My guess is those 4 silver cans next to the propane are liquid nitrogen dewars. You'd have to get close to them and see what was written on the side to be sure.
But that tells me that someone is likely making a controlled gas atmosphere for some purpose. Consisting of a specific stoichiometric ratio of propane and oxygen along with the remainder pure nitrogen. Probably not illegal. Most likely a research project of some kind.
Here's a thought...how about asking them? I seriously doubt they are doing anything dangerous. Make up an excuse. Tell them you are looking for liquid nitrogen, and ask them if they know where you can get some in the area? Then you can casually ask them what they are doing.
The only thing there that could possibly be explosive is the propane, and those tanks in practice can only explode if you literally throw them into a fire. You can leave those things baking in the sun and they will not be dangerous. I know from experience. AZ heat won't phase them, and on the off chance it ever does over pressure because it was incorrectly filled, there is a relief valve that vents the gas up and away from the tank. Without an open flame right next to it, the gas will harmlessly vent off. I don't see anything there that you need to be concerned about if this is merely about safety.
If you are really concerned, just tell your family politely and discretely to please not smoke near that area. I don't think it needs more than that if you don't care about their actual purpose.
My guess is those 4 silver cans next to the propane are liquid nitrogen dewars. You'd have to get close to them and see what was written on the side to be sure.
But that tells me that someone is likely making a controlled gas atmosphere for some purpose. Consisting of a specific stoichiometric ratio of propane and oxygen along with the remainder pure nitrogen. Probably not illegal. Most likely a research project of some kind.
Here's a thought...how about asking them? I seriously doubt they are doing anything dangerous. Make up an excuse. Tell them you are looking for liquid nitrogen, and ask them if they know where you can get some in the area? Then you can casually ask them what they are doing.
The only thing there that could possibly be explosive is the propane, and those tanks in practice can only explode if you literally throw them into a fire. You can leave those things baking in the sun and they will not be dangerous. I know from experience. AZ heat won't phase them, and on the off chance it ever does over pressure because it was incorrectly filled, there is a relief valve that vents the gas up and away from the tank. Without an open flame right next to it, the gas will harmlessly vent off. I don't see anything there that you need to be concerned about if this is merely about safety.
If you are really concerned, just tell your family politely and discretely to please not smoke near that area. I don't think it needs more than that if you don't care about their actual purpose.
GTFO
You talking pure bullshit.