The blast, which exceeded approved limits, occurred at the Glendell mine on December 21.

The force rattled homes throughout the Camberwell Village about a kilometre away.

Ms Olofsson, who was away when the blast hit, returned home that evening to find her favourite two Franklin Mint plates smashed. A wall clock had also been dislodged from its hinges.

Xstrata has since replaced the two broken plates, valued at about $85 each.

It has also offered to pay to repair her clock.

‘‘It’s really an act of good will,’’ Xstrata spokesman James Rickards said. ‘‘We take all complaints seriously.

‘‘Obviously we need to respond to the community in any instance but in this case, where the blast exceeded the limits, we need to make sure that it doesn’t happen again.’’

Ms Olofsson said she was pleased her plates had been replaced.

‘‘The blasts have been fairly mild since then,’’ she said.

A Department of Planning investigation into the blast confirmed its scale but no action was taken against the mine.

The investigation showed the blast caused a ground vibration at Camberwell of 6.53millimetres a second. This was above the approved limit of 5millimetres a second.

Glendall’s licence allows it to exceed the approved limit several times a year.

A Department of Planning investigating officer said Glendall had reported no previous breaches of the ground vibration limit for the reporting period, so the mine had complied with its approval.