There are 3 people in the laboratory. The man who is wearing white shirt is pouring some chemical into radioactive tank and there is alot of green smoke in this room and some chemical over flow from the tank.It makes other people breathing problems. If left longer than this it can kill 3 men immediately.And all of them can be safe from the accident if wear gas mask and suit protection.The wearning signs should be put in this area is be ware toxic chemical.