Around 140,000 of his bus shelters having been installed since they were first produced in 1959 .
Mellor worked for the Midlands engineering firm Abacus Municipal on the design of street lighting , bus shelters , public seating and litter bins .
Around 140,000 of Mellor 's bus shelters having been installed since they were first produced in 1959 .
Mellor worked for the Midlands engineering firm Abacus Municipal on the design of street lighting , bus shelters , public seating and litter bins .