Just a few observations I noticed.
One thing I did notice is 2 of them don't have hard hats and none have safety glasses.
And here on the east coast everyone has to wear safety reflective vests now too.
Maybe a flag man should be on site too, along with a boss, where would we be if it wasn't for bosses.
Signs are needed saying WATCH OUT FOR THE TRAINS, one posted on each side minimum size should be 2'x2'.
The gang plank you made should have some kind of support under it on the long section where the wheelbarrow man is.
That is an unsafe work condition, it could collapse from the weight, it needs handrails on the sides too.
USW safety division has been informed.
They might show up with pickets, till it is fixed.
Expect OSHA to show up soon.
They have been informed.