(1) (a) How many engineers does Rand Water have on its staff complement and (b) how many of these hold a professional engineering qualification; (2) how many of the engineers employed at Rand Water have have had their qualifications for (a) 15 years, (b) a period between 10 and 15 years, (c) a period between 5 and 10 years and (d) less than 5 years; (3) how many engineers has Rand Water retrenched in the past three years; (4) how many engineers have resigned in the past three years; (5) how many vacant engineering posts are there at Rand Water?