The 1954 movie "Salt of the Earth", directed by Herbert J. Biberman, a member of the blacklisted Hollywood Ten, portrays a year-and-a-half long strike by New Mexico zinc miners who belonged to Mine Mill; many of the actors were rank-and-file members of that union. The producers found it difficult, however, to recruit Anglo actors to play strikebreakers or deputy sheriffs; those who disliked the union wanted nothing to do with it, while those who sympathized did not want to be seen switching sides, even as actors.