Knowledge Management

I would really appreciate all your suggestions to improve this parragraph:

Nowadays the most important resource within organizations is information. And the highest valued information is the knowledge that resides in the brains of the coworkers, from the person that works in the lowest organizational position, to the CEO. Unfortunately this invaluable resource is often badly administered, which makes that the knowledge of a person can not be capitalized for the grow of the organization; and furthermore when this person leaves the organization, he takes also his knowledge away, and the new coworker must start almost from the scratch.

Thank you very much.
A

[Tdol]

1 I would say 'workers' or 'staff' rather than coworkers here.
2 This needs changing: which makes that the knowledge of a person can not be capitalized for the grow of the organization;
which means that a person's knowledge cannot be capitalized for the growth of the organisation'
3 this person leaves the organization, he takes also his knowledge away
Personally, I don't like the use of 'his'here, though it is correct grammatically.
4 start almost from scratch (no definite article)