Interesting article to cover your question of safety via trains/pipelines.
Forbes
And yes Bruce do consider using a smart-phone camera in lue of buying another camera.
My Samsung S6 takes very sharp pictures very quickly. The closeups are amazing and very helpful. I find myself taking pictures of all sorts of stuff just so I can more easily read it clear and zoomed.
The only time it takes inferior pictures is things like sunsets. They're washed out pretty badly, which is odd to me because I never see color issues on non-sunset pictures.
I'd suggest you go to a place like
https://swappa.com/buy/devices/verizon
and get an S6, or S7. You'll save a fortune over getting the latest and frankly after about S4 they're all very good.
I got my better half an S5 and she loves it and because I didn't buy it from Verizon they charge me $20/mo less as a "convert" rather than a standard customer.