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In this paper we want to discuss the results obtained on bolometer detectors in the last year by the Milano Group. At first we will show the results on double decay of 130 Te obtained running an array of twenty cryogenic detectors for about 1450h (0.31Kg/y of 130 Te under test). The set-up is made with crystals of TeO 2 of 340 grams each. It was run in the Gran Sasso Underground Laboratory at a depth of about 3500 m.w.e. By recording the pulses of each detector, in anticoincidence with the others, a 90% c.l. lower limit of 0.87×10 23 years has been obtained on neutrinoless ββ decay of 130 Te. Then we will show the exceptional energy resolution of two bolometers composed of tin absorbers and NTD Ge thermistors. They have been fabricated in preparation of experiments in nuclear and subnuclear physics. Both detectors fully resolve the two K α1 and K α2 lines of 55 Mn. The deconvolved FWHM resolution in this energy region ranges from 4.5 to 5.7 eV, according to different intrinsic measured value of those lines.