@misc{indiciae7f56c9e2c2e3,
  title = {Fly Ash: From Cradle to Grave},
  author = {Margaret S. Ellis and Ronald H. Affolter},
  year = {2007},
  doi = {10.3133/ofr20071160},
  url = {https://pubs.usgs.gov/publication/ofr20071160},
  note = {Source identifier: ofr20071160}
}