Fire characteristics and fire suppression techniques are described for undisturbed peatlands, fields being harvested for peat, and peat stockpiles in northwestern USSR. In undisturbed peatland or peatfields, fires are most commonly caused by forest fires. In peat harvesting enterprises over one half of the fires are caused by spontaneous ignition of peat in stockpiles. Locating the perimeters and extinguishing slow-burning peat fires is time consuming. Stockpiles must be monitored for temperature increases and, when heating occurs, the heat must be dissipated or the heated zone must be removed and replaced with wet peat. Once dry, peat is very difficult to rewet because of the high bitumen content. Therefore it is essential to add wetting agents to water used for fire suppression. Machinery used in harvesting is normally used in fire suppression but specialized equipment has also been developed and effectively employed.