[25] We publish a draft Premixed Concrete Award 2010. An issue arose in the consultations concerning a potential overlap between the premixed concrete industry and the on-site building, engineering and civil construction industry, covered by the Building and Construction General On-site Award 2010.[5] It appears that premixed concrete batch plants are predominantly operated by employers in the premixed concrete industry, servicing customers in a variety of industries including the on-site building, engineering and civil construction industry. There are, however, some employers in the on-site building, engineering and civil construction industry who have purchased and operate their own plant, principally in relation to road-making. We think that batch plant operators and associated premixed concrete classifications should fall within the coverage of the modern award covering the employer - the Premixed Concrete Award 2010 in the case of employers within that industry and the Building and Construction General On-site Award 2010 in relation to employers in that industry. The industry of the employer should determine the coverage. As a result, we have included in the coverage clause of the premixed concrete industry exposure draft an exclusion in relation to employers and their employees in the on-site building, engineering and civil construction industry, covered by the Building and Construction General On-site Award 2010. We propose to vary that award to add, in clause 4.2, an exclusion in relation to the Premixed Concrete Award 2010 when that award is made.