The Supreme Court on Thursday gave two more weeks to the Karnataka government to respond to a plea against its ban on transportation of iron outside the state for exports.A bench comprising Justice R V Raveendran and Justice A K Patnaik gave two weeks more time to the state government to give its response over its blanket ban order.Three mining firms — Sesa Goa, MSPL and S B Minerals — had challenged the state government's July 28 order, imposing a ban on the issuance of mineral dispatch permits for transporting of iron ore for exports.