a pump jack at sunset in a wyoming oil field

away black business colorful commodity conventional counterweight crude depletion derrick desert donkey drilling economic economy energy environment equipment extraction facility field fossil fuel grass grasshopper ground head hopper horse horsehead industrial industry jack machine nobody nodding nonrenewable oil oilfield orange outdoors petroleum pollution power production pump pumping pumpjack reservoir resource retro rig silhouette sky skyline sun sunset supply technology vintage well working wyoming