carolyn merritt says it had a dramatic effect. >> fatalities were reduced by 60%, and incidents were%. >> it was a big success. >> and industry is very happy with the standard now and fully supports it. >> so then why is the same standard not applied to other dust in the workplace? it doesn't seem to make sense. >> the industry lobby is very strong, and they do not want new regulation. >> after the grain dust rule was imposed, fatalities went down by 60%. and yet, other industries that have dust see their plants exploding month after month. and the critics say they don't see osha putting two and two together. you have a successful program. why not replicate it? >> well, once again, scott, as i indicated to you, i think it's the fact that we do have-- our standards are in place. and we are looking at the data that we have. >> ed foulke told us he hasn't ruled out issuing a new industrial dust standard. but he says that the issues are complex and need study. >> to go across all the industries, we're talking about tens of thousands of facilities. we're talking about hundreds of types of