An explosion in the recording at the beginning of the Cerredo mine, in Degaña (Asturias), caused five dead and four serious injuries. This is the most tragic accident in the Asturian extraction since August 1995, when 14 workers died in the Hunosa Nicolasa well because of Grisú.
Precisely, the Main hypothesis It also indicates this gas as the cause of the tragedy that shocked the regions of the South -ovest of Asturian and Lion of Laciana and El Bierzo.
The explosion, according to the government delegate in Asturie, Adriana Lastra, was recorded at 8:45 hours of depth several meters, In the third layer of this mine That for seven years it has been practically without activity, but in which the blue resolution company has carried out a research project.
The notice that there were wounded and trapped workers in one of the galleries of the mine were received in the emergency service of the Principality (SEPA) at 9:32 hours, and although initially it was communicated that it could have been caused by problems in a machine, the hypothesis that gained the strength is that it is what it is that it is that is what is what it is what it is that is what is what is what is what is what is what is what is what is what is what is what is what is what is what is what is what is what is what This is what is what is what is this It was due to an embolism Grisúextreme that must confirm the investigations conducted by the judicial police.
What is Grisú
Grisú is a Gas composed mainly of methane which is found In the coal mines And what it is Highly flammable. His danger is that it is invisible and forwarded, therefore it can only be detected with specific tools.
This gas is present in the mines of Hulla – the most abundant mineral coal, strongly requested by its high calorific value – compared to In contact with the air it causes strong explosions.
Apparently this gas could be the cause of the explosion that cost the life of these five miners, all close to the Laciana Leonese region and caused serious injuries to four others who were working inside the mine.
Because it is so dangerous
This gas is dangerous because it is Highly flammable And if not controlled It can cause explosions that cause serious damage For workers, as has been in numerous fatal accidents in the mines throughout history.
It is a gas that absorbs between 80-90% oxygen around it, so it can suffocate the miners found in the galleries in a very short time.
At the time of the explosion, the operators were working with an exploitation permit relating to a possible use of the mineral for the production of graphite.
Inaugurated in 2009 as one of the most modern in Spain, The Cerredo mine was practically without activity for seven yearsAlthough since last summer the Blue Solving company had authorization for a research project on alternative coal uses.
As commented by the Minister of Industry, at the point where the fatal accident occurred, “normal works were carried out in a complementary search permit”.
The latest accident inside this mine, characterized by having a tunnel of several kilometers through which they can enter the trucks of great tonnage, took place on August 25, 2022 when one worker died and another was injured, although on that occasion he took place when they were both outside and lost control of a vehicle.
