TODAY steelworkers will hold a minute's silence to remember the two Celsa workers who died in the explosion in Cardiff.

Hundreds of steelworkers from Wales are travelling to Sheffield for a rally for the Save our Steel campaign.

A spokesman for the steelworker's union, Community, confirmed that it's members will be taking part in the silence at 2pm today. One if its members will play a lament on bagpipes before the silence is held to remember the two workers who were killed.

Tributes have been paid to a Caldicot football coach who died in the explosion at the Celsa steelworks site in Cardiff.

South Wales Police have confirmed that Mark Sim, 41, from Caldicot, was one of two members of staff killed on Wednesday.

Mr Sim was a coach with the junior side of Caldicot Town AFC. 

Club secretary Steve Bright said on the team's Facebook page: "The club has learnt today of the devastating news that Mark Sim has died in the recent accident in the Celsa Steelworks. 

"On behalf of the club, our deepest sympathy and condolences go out to his family, including his wife Sam, son Jackson and their daughter. 

"Mark was a coach/ parent greatly involved with our U14 side, and has played darts for the club." 

Caldicot mayor councillor Dave Evans, speaking on behalf of the town council, said: “It is a shock to hear that a local person has died and so close to home. Our condolences go out to the family and friends of Mr Sim.” 

Caldicot town councillor Julia Haskey, meanwhile, said she was “dumbstruck” when she was told the news. 

She said: “My thoughts go out to the family at this sad time as I have known Sam since she was young girl. 

"It’s just so sad.” 

Caldicot town councillor, Frank Rowberry, who is also on the football club’s committee, said he was “devastated” by the news.

He described Mr Sim as a “lovely” man.

Cllr Rowberry added: “As a coach he was good with the kids and the football team and he will be a sad lose to the team.

“He was dedicated and played a big part in the football club. My condolences go to his family.”

Peter O’Brien, 51, from Llanishen, Cardiff, was the other man to die in the tragedy.

Both families continue to be supported by family liaison officers. 

Emergency services were at the scene yesterday.

South Wales Police were working with the Health and Safety Executive, South Wales Fire and Rescue Service, and Natural Resources Wales to make the scene safe yesterday, they said.

Five men were also injured in the explosion. Of these, one was treated and discharged at scene and four were taken to the University Hospital of Wales, Cardiff. 

Two of those patients were discharged on Wednesday, another was discharged yesterday morning and the fourth man remained in hospital yesterday, police said.

Celsa Steel UK managing director Luis Sanz, speaking yesterday, said that the events had a profound effect on everyone within the company. 

He said: "Our thoughts and deepest sympathies are with the families and loved ones of those who passed away and were injured in yesterday's tragic incident. 

"Yesterday was a tragic day for all of us. Our Celsa family will grieve together and support each other in the days, weeks and months ahead. 

"We thank the emergency services for their excellent response when we needed their help, and we are now working with the relevant authorities to determine the exact cause of the incident. We will not rest until that is established. In memory of our colleagues, we will strive tirelessly to avoid another day like yesterday.”

Floral tributes were laid close to the front gates of the plant.