4th of July chemical reaction display event explode exploding explosion fire works firework fireworks fourth of july independence day July 4 New Year pyro reaction rocket rockets show smoke active bovine bush bushland concerned cow eyeing farm farm-worker farmhand labor laboring labour labouring pushing rural suspicion suspicious wheelbarrow wheeling worker working young-cow abstract aged aging background brown chemical corroded corrosion damage damaged dirty distressed ferrous frame grunge grungy industrial industry iron metal metallic old oxidation oxide paint peel peeling pitted plate red retro rough rust rusted rusty scrap stain stained steel texture urban weathered weathering damage damaged hull macro angle angles appearance bark colored coloring colors coloured colouring colours crack cracked cracks cut cuts droplets excrete excretions exposed grooved grooves lopped orange perspectives protective response sap sawn secrete secretions sticky Stump surface surfaces textures timber tree tree-stump trunk uneven wood wooden