Around 150 of canisters of the gas were discovered in woods near Woodhall Spa in October 2017. Now popular with scout troops and walkers, the area was once a wartime RAF base used by 617 Squadron, better known as the Dambusters.
As a result, the area had to be sealed off for two weeks, with the clean up operation costing around £300,000.
The Environmental Permitting (England and Wales) Regulations 2016 (SI 2016/1154)
29 Jan 2019
Martyn and Michaela Tasker of Lincoln and local man Stuart Holmes appeared before Lincoln crown court last week and pleaded guilty to possessing a liquid sulphur mustard canisters, contrary to Section 2 of the Chemical Weapons Act 1996 and contravening regulation 12(1) of the of the Environmental Permitting Regulations 2016 through causing the unpermitted discharge of poisonous, noxious or polluting matter into fresh inland waters.