The U.S. Department of Interior's Bureau of Land Management (BLM) announced a proposal to regulate hydraulic fracturing on public lands. The proposal requires producers to disclose the ingredients for their fracing fluids, but does include a concession to producers by only requiring the chemicals in the fluids be disclosed after drilling has started. Previously, the composition of these fluids were to have been disclosed 30 days prior to drilling. 

The proposal also includes regulations to ensure the stability of the well casings as well as ensuring that fracing fluids and ...