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ACKNOWLEDGMENTS
The authors would like to thank Jerome Williams of the Laborers Training & Retraining Trust Fund of Northern California for arranging use of their training center and identifying a skilled operator to run the tested equipment. We also wish to acknowledge and thank the operator of the equipment and member of the Northern California Laborer's Union whose patience, attentiveness, and hard work provided us with the data described in this case study. The authors acknowledge Margaret Robbins and Alan Barr for their assistance in data collection.
This research was funded by CPWR – The Center for Construction Research and Training through cooperative agreement OH008307 from the National Institute of Occupational Safety and Health. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of CPWR or NIOSH.
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