The long-lived spallogenic radio-nuclides 26Al and 53Mn were systematically studied in a large number of nonantarctic meteorites by nondestructive &ggr;-&ggr;-coincidence technique and neutron activation, respectively. From the 26Al-activities normalized to the main target element, silicon, an average production rate of 298¿55 (dpm/kg siequ) was derived. Based on 15 chondrites with exposure ages ≥12¿106a and depth profiles of Dhurmsala and Keyes, an average production rate ratio <53Mn/26Al>prod=1.48¿0.15 equ> was calculated, which seems to be depth-independent for meteorites with preatmospheric radii R<35 cm. 53Mn/26Al-radiation ages for 29 stones with short exposure ages were determined. A comparison of our results with the respective 53Mn- and 21Ne-exposure ages generally shows a good agreement. The cosmic ray bombardment age scale covered by this method is 1¿106rad<10¿106a.