Document pmb2bND5NNYp8pkoD9M8Q47B

R. C. Erlcson T. P. Felt J. L. Wright R. Uright 07912 January 10, 1973 Vemiculite-Intermotmtain Laa Irvlna called today and lnfomed me that their plant la unable to neat OSHA requirements vhlla making MK3. Accordingly, ha la changing over to MK4 exclusively. He, therefore, needs the MK4 formula (by weight), suggested packaging weight, etc. Be already has the formula and approval for MK4 from UL. TPP/Jaj Thomas P. Pelt