So, we have an old oil drum, with metal sheet on top, which we fire up when it gets around a quarter full (probably five or six times a year). Very still today, so fired it up as it contained two dead rats and some sheep afterbirth, with paper feed sacks, some bits of wood and a newspaper to ignite them - burned out in about 40 minutes. New neighbour works for the Environment Agency and complained about the smoke (literally an occasional wisp of white smoke). They don't seem to get that they've moved to an industrial area, the industry being agriculture. As it happens we have the necessary EA waste exemptions, which include D7 - burning of agricultural waste. He's complained before and asked us to dowse the fire (what are we supposed to do with wet, charred rats?) Trouble is the way the wind funnels down the valley any smoke will always gravitate towards their property. I can anticipate this becoming a bit of a problem if it's not tackled in a constructive manner, but am wondering what that might be. Suggestions welcome....?