@misc{indiciaedbbe19c07376,
  title = {Acceptable workloads for three common mining materials.},
  author = {S Gallagher and C A Hamrick},
  year = {1992},
  doi = {10.1080/00140139208967379},
  url = {https://pubmed.ncbi.nlm.nih.gov/1387078/},
  note = {Source identifier: 1387078}
}