The problem of the whole body vibration (WBV) exposure for operators in the workplace has been analyzed by many researchers that have studied for a long time the complex relationships between this phenomenon and human health risks. Previous studies have shown that drivers of different vehicles, in particular operators in mining activities, are afflicted by serious musculoskeletal injuries due to WBV exposure. Criteria in order to measure and assess equivalent daily exposure, associated with different operations of the vehicles, are referred to standards ISO2631-1, based on method of the frequency- weighted equivalent continuous root mean squared (r.m.s.) acceleration. Numerous studies point out the complexity to outline a clear relationship between WBV exposure and the human health disorders. An experimental campaign was realized in a limestone quarry near Rome and vibration measurements were recorded on four different mining vehicles (dumper, jeep, digger and puncher machine). The vibratory signal was taken at the seat operator/seat interface (X, Y and Z axes) in accordance with the ISO 2631-1 during daily quarry operations. The data obtained were elaborated and finally the results are presented in order to evidence the difference of WBV exposure between the specific operating tasks and some methods for the purpose of exposure dose reduction are suggested.
earth moving machinery, quarry, whole body vibration, workers exposure
 Paddan, G.S. & Griffin, M.J., Evaluation of whole-body vibration in vehicles. Journal of Sound and Vibration, 253(1), pp. 195–213, 2002. https://doi.org/10.1006/jsvi.2001.4256
 Kittusamy, N.K. & Buchholz, B., Whole-body vibration and postural stress among operators of construction equipment: a literature review. Journal of Safety Research, 35(3), pp. 255–261, 2004. https://doi.org/10.1016/j.jsr.2004.03.014
 Magnusson, M.L. & Pope, M.H., A review of the biomechanics and epidemiology of working postures (it isn’t always vibration which is to blame!). Journal of Sound and Vibration, 215(4), pp. 965–976, 1998. https://doi.org/10.1006/jsvi.1998.1677
 Bovenzi, M., Low back pain disorders and exposure to whole-body vibration in the workplace. Seminars in Perinatology, 20(1), pp. 38–53, 1996. https://doi.org/10.1016/s0146-0005(96)80056-5
 Miyashita, K., Morioka, I., Tanabe, T., Iwata, H. & Takeda, S., Symptoms of construction workers exposed to whole body vibration and local vibration. International Archives of Occupational and Environmental Health, 64(5), pp. 347–351, 1992. https://doi.org/10.1007/bf00379545
 Tiemessen, I.J., Hulshof, C.T.J., &. Frings-Dresen, M.H.W, An overview of strategies to reduce whole-body vibration exposure on drivers: a systematic review. International Journal of Industrial Ergonomics, 37(3), pp. 245–256, 2007. https://doi.org/10.1016/j.ergon.2006.10.021
 Thalheimer, E., Practical approach to measurement and evaluation of exposure to whole-body vibration in the workplace. Seminars in Perinatology, 20(1), pp. 77–89, 1996. https://doi.org/10.1016/s0146-0005(96)80060-7
 Hinz, B., Seidel, H., Hofmann, J. & Menzel, G., The significance of using anthropometric parameters and postures of European drivers as a database for finite-element models when calculating spinal forces during whole-body vibration exposure. International Journal of Industrial Ergonomics, 38(9–10), pp. 816–843, 2008. https://doi.org/10.1016/j.ergon.2007.10.022
 Boshuizen, H.C., Hulshof, C.T.J., & Bongers, P.M., Long-term sick leave and disability pensioning due to back disorders of tractor drivers exposed to whole-body vibration. International Archives of Occupational and Environmental Health, 62(2), pp. 117–122, 1990. https://doi.org/10.1007/bf00383587
 Zimmermann, C.L. & Cook, T.M., Effects of vibration frequency and postural changes on human responses to seated whole-body vibration exposure. International Archives of Occupational and Environmental Health, 69(3), pp. 165–179, 1997. https://doi.org/10.1007/s004200050133
 Grandjean, E. & Hünting, W., Ergonomics of posture: review of various problems of standing and sitting posture. Applied Ergonomics, 8(3), pp. 135–140, 1977. https://doi.org/10.1016/0003-6870(77)90002-3
 Alem, N., Application of the new ISO 2631-5 to health hazard assessment of repeated shocks in U.S. army vehicles. Industrial Health, 43(3), pp. 403–412, 2005. https://doi.org/10.2486/indhealth.43.403
 Alfaro Degan, G., Lippiello, D. & Pinzari, M., Whole body vibrations: experimental assessment of anthropometric differences on the effects of WBV exposure in quarry workers. WIT Transactions on The Built Environment, 151, pp. 61–72, 2015.
 Schwarze, S., Notbohm, G., Dupuis, H. & Hartung, E., Dose–response relationships between whole-body vibration and lumbar disk disease: a field study on 388 drivers of different vehicles. Journal of Sound and Vibration, 215(4), pp. 613–628, 1998. https://doi.org/10.1006/jsvi.1998.1602
 Maeda S. & Morioka, M., Measurement of whole-body vibration exposure from garbage trucks. Journal of Sound and Vibration, 215(4), pp. 959–964, 1998. https://doi.org/10.1006/jsvi.1998.1676
 Alfaro Degan, G, Lippiello, D., Lorenzetti, S. & Pinzari, M., Vibration assessing models: comparison between methods. WIT Transactions on Biomedicine and Health, 16, pp. 59–69, 2013.
 Schneider, S.P., Kittusamy, N.K., & Buchholz, B., An ergonomic evaluation of excavating operations: a pilot study. Applied Occupational and Environmental Hygiene, 16(7), pp. 723–726, 2001. https://doi.org/10.1080/10473220120652
 Village, J., Morrison, J.B. &. Leong, D.K.N., Whole-body vibration in underground load-haul-dump vehicles. Ergonomics, 32(10), pp. 1167–1183, 1989.
 Bovenzi, M. & Betta, A., Low-back disorders in agricultural tractor drivers exposed to whole-body vibration and postural stress. Journal of Safety Research, 27(3), pp. 196–197, 1996. https://doi.org/10.1016/0022-4375(96)82246-8
 International Organization for Standardization, Mechanical vibration and shock-Evaluation of human exposure to whole-body vibration-Part 1: General requirements, The Organization, 1997.
 Frimpong, S., Galecki, G. & Chang, Z., Dump truck operator vibration control in highimpact shovel loading operations. International Journal of Mining, Reclamation and Environment, 25(3), pp. 213–225, 2011. https://doi.org/10.1080/17480930.2011.595090