Please follow this link to an excellent essay on the unity of human work and environmental destruction: http://www.orionmagazine.org/index.php/articles/article/267/
I recommend you set aside some time to read this carefully.
Notice how all endeavors based on the myth of isolation and separateness are unsustainable? Any action taken in hubris, which is to say in ignorance of its connection to everything, is likely to cause harm. Our duties as workers start with facing the depth of ecology with profound humility, then vowing to do no harm.
"I'm just doing my job.": an excuse enabled by specialization.
Also note that White uses the inevitable two examples of the depths of our current specialist ignorance: we don't know how to grow and preserve our own food, and we don't know how to build our own shelter. I will continue to insist that our most fundamental human condition, as naked, omnivorous apes, ties us to shelter and food production in the deepest way. I think this depth is where White's "spirit" is located.