The boy picked up a small piece of steel and a workman's tool,a hammer.

VOA: special.2009.02.21

Scientists need to be sure that when the big hammer tool turns in a rock it breaks the surface into a useable powder that will not clog or damage the sample handling mechanism.

BBC: Curiosity Mars rover deploys its rock brush

Their service is a tool, like a hammer, and no matter what your business does or needs, to them it will always look like a nail.

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Curiosity is building towards using its hammer-drill, the last major tool yet to be deployed on the mission.

BBC: Curiosity Mars rover deploys its rock brush