A former inspector for the federal government now diagnosed with a terminal 9/11 illness is battling with the Labor Department for his workers’ compensation benefit. Dale Henderson, 59, was a compliance inspector with the Occupational Safety and Health Administration on 9/11. He’s been diagnosed by government doctors with interstitial lung disease — one of several illnesses linked to exposure to hazardous materials on 9/11 or at Ground Zero. Henderson’s 9/11 illness was acknowledged by the World Trade Center Victims Compensation Fund — which awarded him a $300,000 payout when he first got sick.9/11 asbestos debris lawsuits cleared by N.Y....