Tenacity not less thanei.ooopounds per sguarelnoh. m t tBidders will specify the date at which they canWumence deliveries, and the rate at which theycan deliver each part thereafter.No bids will be received except from partiesactually engaged In the manufacture of this orsimilar kinds of work, ad who can bring ampleevidence that they have in their own shops all (hemachinery and appliances for turn