Gump said that Japan was able to bring back a few grains of asteroid material to study, but there is no substantial quantity to analyze.

FORBES: Asteroid Mining Becoming More Of A Reality

"This is because a substantial quantity of potentially explosive pharmaceutical material - Isosorbide Dinitrate (ISDN Pure) - has been identified on the site following a recent joint inspection by the Health and Safety Executive (HSE) and Environment Agency Wales, " explained the council officer.

BBC: Euticals: Flintshire council letters over chemical find

In a statement, the council's chief executive, Colin Everett, said "a substantial quantity of potentially explosive pharmaceutical material - Isosorbide Dinitrate (ISDN Pure) - has been identified on the site following a recent joint inspection by the Health and Safety Executive (HSE) and Environment Agency Wales".

BBC: Euticals, Sandycroft: Chemicals apology and reassurance