The fineness of the ash in this case is unusual, says Thorvaldur Thordarson, an Icelandic volcanologist.
ECONOMIST: Volcanoes and air travel: Small eruption in Iceland | The
Former Stoke City, Barnsley and Notts County manager Thordarson took over at the Alexandra Stadium in December 2008.
"I want to build a team, to make things happen rather than wait for them to happen, " said Thordarson.
Thordarson became Stoke City's first non-British manager in 1999, leading the Potters to the Football League Trophy in 2000.
"In my mind Dario is the biggest asset at the club, " said Thordarson.
After relegation from League One under Thordarson in May, Crewe have won only four times in 15 games this term.
Martin, 22, had a trial with the Alex in the summer, only to subsequently be released by former Crewe boss Gudjon Thordarson.
Thordarson also said he has already assessed the Crewe squad and is ready for a busy time in the January transfer window.
Crewe chairman John Bowler has told BBC Radio Stoke that the club are in no rush to appoint a successor to Thordarson.
The Alex were beaten 5-3 at the Crown Ground, although they were 5-1 down at one stage, with Thordarson describing the defeat as "embarrassing".
They have gone out of both cup competitions and have lost their last four league games, a run which ultimately cost Thordarson his job.
Two goals each for Bobby Grant and former Crewe loanee Michael Symes did the damage on Friday, with Thordarson left dumbfounded by his team's display.
Bowler is keen for the players to put past disappointments behind them, and remains confident that his manager Gudjon Thordarson is the man to achieve it.
But Holland lasted just 16 months before leaving his position in November 2008, following which Gradi resumed caretaker control until Thordarson took charge in early January.
Gradi will now return to his role as technical director at the Alexandra Stadium and Thordarson said he is looking forward to working with the Man from Milan.
Miller was largely ignored under former boss Gudjon Thordarson, scoring once in just three starts under the Icelander this season, but Gradi says he has a key role to play.
Thordarson handed a debut to youngster Scott McManus on the left of midfield and was pleased with the way he performed on his first appearance since joining from Curzon Ashton in the summer.
The 51-year-old's position came under threat when manager Gudjon Thordarson wanted to bring in his own number two, and that has led to current assistant manager Neil Baker being offered another role within the club.
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