As technology keeps improving the way construction workers do their jobs, the amount of equipment needed also increases. An earthmoving job in 1954 required 14 production units. In 1963 that same job would require 19 production units. The point being made is although there is a negligible difference in the total price of equipment needed to do a given job, there is a very marked difference in the number of units comprising a spread. Therefore, the impact of loss of the use of a production unit due to an accident or any other cause has increased tremendously. Today the loss of one unit is the equivalent of the loss of 3 or more a few years ago. It should be evident then that no contractor can afford an indifferent attitude toward the safe operation and maintenance for his equipment today. There are a few things the contractor could be doing better to make his equipment last longer. First, it is imperative that he know what new equipment can do and what it cannot do. Second, operators should be thoroughly familiar with the characteristics of a machine before they operate it. Training programs should be used wherever possible. Third, the effects of equipment accidents are now so far reaching and devastating in terms of potential economic loss as well as personal injury and property damage, that more stringent rules must be established and enforced regarding the conditions under which they are operated. Fourth, manufactures should be pushed to engineer safety into their equipment with the same degree of effort that goes into making it bigger and more productive. Contractors should specify inclusion of any sound safety devices listed as options when making a purchase. Fifth, protection of the public must be considered carefully where heavy hauling units cross public thoroughfares. Last, equipment must be maintained in top condition at all times and a thorough safety check should precede the start of each shift.