APPENDIX S Cont'd.
1974/75 1975/76 1976/77
$ $ $
(H) Quarries Revenue
Sales of Quarry Products 10,132,838 14,001,779 16,565,044 Sales of Sand 28,116,794 28,177,684 32,426,995 Quarry Contract Premia 5,891,009 11,858,268 7,491,888 Laboratory Fees 132,800 105,395 136,788 Departmental Charges on Stone Sales 83,694 82,775 126,773 44,357,135 54,225,901 56,747,488(I) Sewage Laboratory
No. of samples of sewage, seawater, etc., collected for analyses 6,270
No. of tests carried out 25,541
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