Washington ? A six-month ban on deepwater drilling in the Gulf of Mexico would directly put more than 9,000 people out of work and indirectly affect another 14,000 jobs, according to a memo from the nation’s top drilling regulator.

The federal document, which weighed the economic impact and alternatives to the ban, was sent to Interior Secretary Ken Salazar on July 10 by Michael Bromwich.

Salazar issued a moratorium in June, but it was struck down by a federal judge in New Orleans after oil and gas drilling interests said it wasn’t justified following the Gulf oil spill.

The Obama administration issued a new moratorium July 12 — two days after the memo — that stressed new evidence of safety concerns. The White House hopes the revised ban will pass muster with the courts.

The moratoriums were put in place following the Deepwater Horizon rig explosion April 20 that killed 11 people. Millions of gallons of oil spilled into the Gulf after the rig sank.

Some energy experts, engineering consultants and Gulf Coast leaders have joined Big Oil to ask Salazar to change his mind. Drilling was safe before the BP spill, they said, and Gulf communities that depend on the industry were suffering unfairly.