the dosimetric properties of some twenty textile fibers have been studied in order to develop a method for determining the dose received in the case of an accidental gamma irradiation. three textile fibers having properties most closely satisfying our needs were selected for detailed investigations: cotton, polypropylene and quartz. electron paramagnetic resonance (epr) readout techniques were used. in order to eliminate spectral anisotropy problems due to textile fiber inhomogeneities, a system has been developed to rotate samples in the resonant cavity during measurements. the structure, physical and chemical properties of cotton and polypropylene were investigated. a bibliographic study of the combined effects of light, heat and ionizing radiation on textile fibers was carried out. a linear relation exists between the epr signal and the gamma ray dose received over a certain dose range. a method has been developed for preparing samples so as to reduce background noise not due to irradiation; in this way the detection threshold is lowered and a greater time stability obtained. unknown doses corresponding to known spectra are determined by linear interpolation using a series of spectra obtained from the same fabric irradiated with known doses (era citation 13:052741)