PHOENIX (AP) — A company planning a copper mine in Florence asked a judge to throw out an ordinance that limits sulfuric-acid storage and would effectively shut down the project.

The Arizona Republic reports ( that Curis Resources Inc. asked a judge to block the town's ban on storage or use of large quantities of sulfuric acid, a key ingredient in the copper-recovery process.

Curis purchased property near Florence's center for the project and secured a lease on unincorporated state trust land surrounded by the municipality.

The Town Council opposed the project and adopted the ordinance after Curis announced plans to proceed with a mine on the unincorporated state property.

The lawsuit says Florence's ordinance was adopted solely to block the project.

Florence Mayor Tom Rankin says it wasn't directed solely against Curis.


Information from: The Arizona Republic,