As the big freeze continues, the government has launched a centralised register of salt supplies to make sure stocks are evenly distributed throughout the country and get to the areas where they is most needed.

In many areas, local councils are reporting supplies are low and some claim to be on the verge of running out.
Salt is even turning up on internet auction sites for four times the going rate of €60 a ton, the Volkskrant reported on Wednesday afternoon.
Cycle lanes
The Dutch cycling association has had dozens of complaints from cyclists about icy cycle paths and is urging local councils to pay more attention to making sure cycling is safe.
In Amsterdam in particular, few cycle lanes have been gritted, local television station AT5 reported.
The Dutch road safety organisation said local authorities should now focus on clearing cycle lanes and making sure the elderly can move around safely.
More frost
The freezing temperatures are set to continue in most parts of the country for the next few days, weather forecasters said on Wednesday.
More snow is expected overnight, particularly in the east and south of the country on Thursday and Friday.
Snow may also fall over the Christmas weekend, when the temperature at night could plunge to as low as -14 Celsius.
According to website Weerplaza.nl, the frost will continue well into next week and this December is heading to be the coldest on record.