"Some explosive material at the time was discovered, although none of it carried IAEA seals, and this discovery was reported to coalition forces for removal of the material, " Ereli said.
No production from the mine is expected this year after the federal Mine Safety and Health Administration ordered the Silver Shaft to be closed for removal of built-up sand and concrete material.
The temporary closure of the Silver Shaft at the Lucky Friday mine was ordered last year by the federal Mine Safety and Health Administration for removal of built-up sand and concrete material.