The Grey District Council was to observe one minute's silence at 3.44pm, the time of the explosion on November 19, 2010.
At the mine site, 40km north of Greymouth, preparations were continuing today for an attempted re-entry next year.
Grey District Mayor Tony Kokshoorn said the hurt of the mining disaster was still raw.
``You hear everywhere that people do want to move on, but it's not that simple. The men are still up there.''
The families also face yet another year of litigation. Former mine manager and chief executive Peter Whittall is expected to go on trial early next year, in Wellington.
Some families are also still considering a private prosecution.
Each day, at the mine, preparations progress for a possible re-entry, with the hope eventually to get deep into the mine to retrieve the bodies and perhaps establish what caused the fatalities.
Mr Kokshoorn said he felt the ongoing impact of the tragedy had ``bottomed out''. Greymouth not only lost 29 men three years ago, it also lost 150 jobs, followed by 400 more jobs with the subsequent closure of the Spring Creek Mine.
In Australia, the Pike River disaster has not been forgotten either, and the Australian miners' union, the CFMEU, was sending two representatives to the Blackball commemoration this evening.
Engineering, Printing and Manufacturing Union assistant national secretary Ged O'Connell said they had come a long way since the disaster.
"Efforts are now under way to re-enter the mine, and the Government is fully implementing the recommendations of the Royal Commission to make miners safer. It is, however, a sad day of mourning for the families of the men who never came home.''
