Banelings doesn't hurt friendly units

Zhydaris confirms that the baneling's splashdamange does not damage friendly units. Force field can prevent workers from mining.

Zhydaris also made a comment on the Disruptor's force field,
in the original Starcraft workers will pass through any unit that blocks it's way as long as it's aiming for a resource, with exception of buildings and doodads, and in Starcraft 2 the workers will also be stopped by the force field.
This can evolve into interesting tactics such as putting down force field in your opponents mining area and prevent him from gaining resources for 15 seconds, which is the current duration of the force field.

- "the force fields actually stop harvesters, just like they do with other ground units. I still prefer using them to block all escape routes, but what you’re suggesting is a valid alternative indeed!" - Zhydaris.



Links
Forums.Battle.net - Source: Banelings
Forums.Battle.net - Source: Force Field