Yes. Stringent water quality regulations require that any water that is released into a river or stream must go through permitted discharge points and must comply with Florida Department of Environmental Protection standards for water quality. These standards are designed to protect water bodies for recreational uses such as swimming and fishing and to protect public health and welfare.
Why are clay settling areas important to mining operations?Clay settling areas play an
important role in phosphate mining. The phosphate rock is first
removed from the ground, along with clay and sand, in a mixture of
materials known as the matrix. After separating the clay and sand
from phosphate pebbles at a processing plant, the clay is routed to
a settling area in slurry form. These areas are kept active while
the clay consolidates, or compacts, which then minimizes the total
acreage required on a mine site for clay storage.
Clay settling areas also provide water storage, which helps Mosaic
minimize the amount of groundwater it uses. Given this storage
capability, Mosaic is able to meet most of its water needs using
this recycled water. Clay settling areas have an added benefit of
providing long-term interim aquatic habitat for fish, amphibians,
reptiles, birds and other wildlife.

No. The Florida Department of Environmental Protection requires that dams surrounding clay settling areas be engineered in keeping with best available technology, inspected often, carefully constructed and well maintained - with extremely low potential for failure. In the decades since an often-cited clay spill adversely impacted the Peace River, dam construction practices, financial assurances, and the regulatory/inspection requirements that govern them have changed dramatically, and new techniques ensuring even greater safeguards are continually being developed.
Does mining make drinking water radioactive and increase the risk of cancer?No. All credible research, including studies conducted by the U.S. Environmental Protection Agency (1977), Florida Department of Health/Bureau of Radiation Control (1988), U.S. Geological Survey (1984), Florida State University (1988) and Agency for Toxic Substances and Disease Registry (1994), has found that phosphate mining has absolutely no radiological effect on either surface or ground water.
Does phosphate mining involve the addition of radioactive material?No. The phosphate rock deposits in Central Florida were formed 10 to 15 million years ago when large amounts of rich organic material decayed at the bottom of the sea. As the sea level changed, erosion concentrated the phosphate, incorporating a small amount of uranium and producing the deposits that are mined today. The amount of uranium, uranium decay products and radioactivity in a phosphate mining area is proportional to the amount of phosphate found there. Although neither the mining nor processing of phosphate involves the addition of any radioactive substances, the digging up and turning over of soil to find and remove phosphate can increase radioactivity near the surface by bringing material containing uranium decay products once 30 feet underground to the surface.
Does someone measure phosphate mine radiation?Yes. The Florida Department of Health's Bureau of Radiation Control has monitored phosphate mine radiation for more than 15 years, taking measurements of gamma radiation, soil radium and radon emanation from soils on lands before and after phosphate mining. Gamma radiation levels are generally two to three times greater on reclaimed land than non-mined lands, while reclaimed soil radium concentrations are five to 15 times pre-mining conditions. Radon soil emanation rates are only slightly elevated on reclaimed lands.
Is living on or near reclaimed land harmful to someone's health?People throughout the state (and around the world) detect radon in their homes, so statewide building codes were adopted to address radon concerns. At certain levels, for example, a sub-slab ventilation system is installed to address the issue.
Does Mosaic currently conduct ambient air monitoring at its mines and what do you do about dust?No. For years, we monitored the air surrounding our operating mines for Total Suspended Particulates and consistently met the EPA's national standards for particulate matter or dust. In keeping with our longstanding good neighbor policies, we pave access roads before beginning plant construction, clear small parcels of land rather than whole areas, use temporary land cover and water trucks when and where appropriate, and implement best management practices. While Mosaic consistently tries to prevent dust from company mining operations from drifting onto nearby property, if that does occur, we will quickly investigate each complaint to determine the source and assist the neighbor as appropriate.
Is the health of employees & residents in phosphate regions at risk due to radioactivity?No. Radioactivity is a natural part of our every day
lives. Microwave ovens use radiation to cook food, radio waves
activate our radios and televisions, and X-rays are routinely used
in medical procedures. Many natural elements have radioactive
atoms. Over the millennia, radioactivity has accumulated deep
underground where phosphate ore is found. All phosphate rock,
regardless of its geographic or geological origin, contains trace
amounts of radioactivity.
The Florida Industrial and
Phosphate Research Institute, an independent state research
agency, has done multiple studies on phosphate industry employees
to measure the amount of radiation workers are exposed to. The
results of this study indicate that average exposures in the
phosphate industry are levels that are much less than the 100
millirem/year limit - the level set by the Department of Health for
public safety. For more details, visit www.fipr.state.fl.us.
Officials at both the Florida Fish and Wildlife Conservation Commission (FWC) and the U.S. Environmental Protection Agency (EPA) disputed these claims, confirming that anti-phosphate groups misused the data or used inaccurate data to garner media publicity in their crusade against mining. The controversy began over a draft report on the Borden Chemical Company/Tenoroc Mine prepared by an independent consultant for the EPA. The report noted "elevated" levels of contamination in soils and ground water, and went on to make a recommendation that Tenoroc staff avoid drinking well water. In reviewing the report, the FWC and EPA noted that, despite the reportedly "elevated" level of radium, the well water quality was actually better than EPA drinking water standards. The draft report's misinterpretation of the term "elevated" to imply "risk" contributed to the EPA's subsequent decision to publish retractions in area newspapers.
More than 20,000 people annually enjoy high-quality fishing at the
Tenoroc Fish Management Area (exclusive of shooting, horseback
riding, camping, etc.). The FWC estimates that associated angler
expenditures have contributed more than $12 million dollars
(1996-2004) to the local economy, generating $714,684 in state
sales taxes.
Tenoroc was mined prior to passing the mandatory reclamation rule,
and the northern Polk County portion of the park is now undergoing
an inter-agency watershed restoration effort. To read more, visit
http://www.dep.state.fl.us/water/mines/index.htm.
No. Red tide is a naturally occurring phenomenon that
cannot be prevented. It occurs in the Gulf of Mexico when there is
a strong "thermocline," a layer of water where the temperature
changes quickly. The thermocline, which separates the warmer
surface water from the cooler bottom water, traps the toxic bloom
near the bottom of the Gulf, worsening its effects there. When the
algae's toxins kill fish, bacteria breaking down the dead matter
rob the water of oxygen.
While most scientists agree it's important to reduce nutrient
pollution from all sources (including urban development), there is
no evidence to support that phosphate mining or fertilizer
manufacturing operations are causing red tide outbreaks. In fact,
regular operating procedures require our facilities meet state
water quality standards.