The following further facts were also noticed by him: ‘The assessee has claimed exemption on the purchase of MS Scrap, S.T. Sleeper, rails etcetera from 01.04.1995 to 22.01.1996. The aseessee had purchased the said goods from registered dealers like M/s.Narayana Steel Centre, Secunderabad, M/s.Dilshad Iron Traders, Secunderabad, M/s.Sagar Enterprises etcetera’. Therefore, the said assessing authority had verified the genuineness and payment of taxes by visiting the business places of the above concerns and had also verified the books of accounts of the above dealers and had noticed that corresponding purchases are from South Central Railway and that the said concerns have not paid any sales tax thereon and that the sales affected by them are exclusive of sales tax. On verification of invoices, he had noticed that M/s.Narayana Steel Centre had issued sale invoices to the assessee herein that the goods sold are exclusive of APGST and that the said fact is clearly mentioned in the bills. Therefore, he has taken the view that iron scrap is liable to tax at the last purchase in the State under entry 2-A of the third Schedule to the Act.’ On verification of the sale bills issued by the South Central Railways and its records, it has come to the notice of the AC (Int) that the South Central Railway had not collected any sales tax on the sales of MS rail and MS scrap and any other scrap sold by them with effect from 14.02.1989 on the ground that the point of levy is not at the hands of the first seller but at the hands of the purchaser as per entry 2-A of the third schedule. The AC (Int) had also verified the books of accounts of the buyers from the South Central Railway and had come to notice that they had also not paid sales tax on the corresponding purchases. As such, the fact is that the purchases made by the assessee herein had not suffered tax at any stage and therefore, it is obvious that they are not entitled for any set off of tax according to G.O.Ms.No.793. Therefore, on the undisputed facts which had come to light on the inspection and verification made by the AC (Int), it is appropriate that the exemption claimed on the purchase of scrap from 01.04.1995 to 22.01.1996 is disallowable. Accordingly, the AC (Int) by his orders dated 28.02.1997 had disallowed the same. However, as already noted the appeal preferred by the assessee before the ADC was allowed. The ADC while dealing with the tax liability on the said turnover of Rs.1,28,58,278/- had observed that it was argued that this turnover represents the purchase value of ST sleeper, condemned coach wagon cuttings, bearing plates, tie bar, defective bloom, bar cuttings, plate cuttings etcetera and that the same fall under entry 2(xvi) of the third schedule to the Act and the same is liable to tax at the point of first sale in the State. Having noted the said argument, he did not consider