people desolveing in to dust

[guest22]

 people  up  in  the  mountains  camping .  when  something   happens.  A  comet  may  or  may not  have  gone  by. causing  people  of   the   earth   to   turn  to  dust.
The people try to make it back to civilization to find out if anyone else has survived...

By the way this movie is not: Night of the Comet. as I have seen that film.

Thank You in advance for the help!  

[Andrew]

Do you remember the people taking refuge at a cabin and that one of them was a pilot?  I'm wondering if you could be thinking of "Invasion from Inner Earth" (1974).

[Shadow]

Try Where Have All the People Gone (1974). It sounds pretty close.

http://www.imdb.com/title/tt0072400/plotsummary

http://www.imdb.com/title/tt0072400/

[Andrew]

Try Where Have All the People Gone (1974). It sounds pretty close.

http://www.imdb.com/title/tt0072400/plotsummary

http://www.imdb.com/title/tt0072400/

Shadow's suggestion is definitely more likely than my own.  Your film almost has to be "Where Have All the People Gone."

[M.10rda]

Even though the O.P. here is a guest with a different name, another guest "Matt" (maybe the same person?) described the same movie around the same time, and got the same solution from Andrew and others. The title is WHERE HAVE ALL THE PEOPLE GONE? Rev. Powell, if you want to move the other one to Solved (as "Matt" was happy w/ the solution) you could move this one too.

[Trevor]

"People dissolving into dust" sounds like me and my colleagues around performance review time 

[M.10rda]

Lol, sure. I'm in academia and I can't dispute this alternate solution.