1.   Ammonia leaks can cause serious environmental risks.

2.   Residents from a poor slum in Pakistan blocked trains by sitting on railway tracks, demanding that the government offer compensation to victims of an ammonia gas leak.

3.   They also set up a radiation monitor outside the space station as well as a gas-sniffing gauge to detect any ammonia coolant leaks.

4.   On Wednesday a KOC worker was hospitalised after an ammonia leak at a refinery at Al-Ahmadi, south of the Kuwaiti capital.

5.   The brewery was closed down following the ammonia leak, local officials told the news agency.