http://www.thekrib.com/Plants/Fertilizer/soil.html

Briefly, Ironite is made from mining mill tailings - usually a real grab
bag of heavy metals - so it actually contains more stuff than they claim
in their labeling. In particular, the State claims that Ironite contains
levels of lead and arsenic that are potentially dangerous to humans.

http://www.azdeq.gov/environ/water/w...nload/hhra.pdf

Arsenic, cadmium and lead were selected as the potential COCs (Chemicals
of concern ) in Ironite® . The concentrations of the COCs that
may be present in surface soils following long term application of
Ironite® were modeled using a conservative methodology that assumes that
Ironite® is applied at the maximum recommended rates suggested on the
label. Modeling was conducted using USEPA equations and assumptions.
Area specific values were used where necessary. The potentially complete
exposure route to the potential COCs in surface soil include ingestion,
dermal contact, and inhalation of fugitive dust.
--
Billy


Hum...well what would be a safe additive that would complement the soil
along with Ammonium Phosphate and Sulfur?