My first question is this:
How would you suggest that an organisation communicate its mission statement to its:
a. Employees?
b. Stakeholders?
c. Broader community?
a. Employees should know your mission statement, and your mission statement should be communicated broadly through word of mouth, every internal document and everything you do should revolve around it. Hence why it's broad.
b. Shareholders should also know your mission statement when they research your business. Your mission statement is your underlying goal, and whether it be through your website, through annual reports, through press releases or any other way, they're probably already aware of it.
c. The underlying point I'm trying to make is that everyone who is affected by your organisation SHOULD know your mission statement, because it shows through with everything you do. Mission statements may be broad, and that's the reason you can pretty much identify what the organisation is trying to achieve just by your ordinary daily operations.
To be specific, company profiles, reports, websites, press releases, notice boards, corporate objectives, newsletters, etc. should be available to as many people as possible if the organisation cannot directly show what they're trying to achieve through their operations.