In this presentation neutron scattering experiments performed in magnetic fields up to 17 T (presently the highest static magnetic field for neutron scattering in the world) will be the main topic. Orthorhombic antiferromagnets UNiGe, ferromagnetic superconductor URhGe, hexagonal antiferromagnet UNiAl and tetragonal U2Pd2In will be mentioned as examples and discussed in details. We also report on new insights regarding the hidden order in the heavy-Fermion compound URu2Si2. It will be shown that neutron scattering can lead to a substantial new information that cannot be obtained otherwise.
　We will report also on a project proposed to German authorities to build Neutron Magnetic Field Laboratory (NMFL) at HMI Berlin. The NMFL will for the first time combine a neutron source and a high magnetic field laboratory. A state-of-the-art continuous high magnetic field technology of up to 30-40 Tesla will enable experiments that were up to now unthinkable. Geometrical requirements following from the neutron scattering technique impose serious restrictions onto the design of the magnet coil and the neutron instrument. At the same time one has to keep in mind that such an instrument should be able to cover major experimental scattering configurations. Possible technical solutions will be discussed.