@misc{1182376, author = {Jimmie Hinze and Nicholas J Carino}, title = {A study of work practices employed to protect workers in trenches:}, year = {1980}, month = {1980-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.IR.80-1988}, language = {en}, }