detail of dirty hands

20 20s 25 30 30s 35 40 age black blacksmith body caucasian charcoal close closeup coal craftsman craftsmanship craftsperson detail dirty farrier farriery finger fingers forge forgeman forging furnace hand hands handwork hard hearth heating heavy human indoor industrial industry job male man manual manufacture manufacturing metal metallic metalwork occupation open outdoor palm palms people person profession shop show showing smith smithery smithing up work worker working workshop years young