An Estonian quarry’s decision to switch to Caterpillar excavators for rock breaking and loading and hauling applications is said to have led to big fuel efficiency gains and healthier profitability, as Guy Woodford discovers.
With a large residential housing area, a city ring road, electric power lines and gas pipelines less than 100 metres from PTT’s Väo quarry in Tallinn, Estonia, the past 20 years has seen the company using hammers rather than blasting in order to gain the vast majority of its limesto