Electromagnets have been built for continuous operation in liquid hydrogen. A steady field of 62 000 oersted, corresponding to a power dissipation of 15 kw has been obtained in freely boiling hydrogen with a coil 5 in. long, 2.5 in. internal diameter, and 7.5 in. external diameter.Some of the mechanical, electrical, heat transfer, economical, and safety problems encountered in this work are discussed.