Danish journalist Nils Mulvad has created a Google Map which shows the location of 170 dangerous Danish companies. The companies have been designated dangerous by the Danish authorities because they process chemicals, fireworks or produce weapons etc.
At first the authorities refused to release the list but Nils submitted a Freedom of Information request and the government were forced to hand it over. Nils has now published the list and this map of the companies - it is the first time the list of companies has been published in Denmark.
Nils has also published an open Google Fusion Table of the data, here.