Below you will find the names and links to 4 other forum boards. Simply, click on a link below, then sign in for a free account. You just identify the company in which you have an interest via its trading symbol and log into the relevant discussion forum (excluding Yahoo - here just put in the trading symbol, enter it and then click the 'conversation' section). Usually, those involved are present (or past) Investors in the company. They present their points of view, discuss perspectives or simply read what others have written. Again, these are all free to sign up for so just click on a link below and follow the directions provided.
The following websites are provided for user reference.
Toward a Global Rare Earth Industry Association
The Rare Earth Observer
Sites below do provide some open access material although most is locked for sale.
Seeking Alpha Articles