97 (` lakhs) Note 22 Power, fuel and water 2021-22 2020-21 Power, fuel and water 321.52 258.56 321.52 258.56 (` lakhs) Note 23 Repairs and maintenance 2021-22 2020-21 Consumption of stores and spares 101.22 62.84 Plant and equipment repairs 119.86 118.39 221.08 181.23 (` lakhs) Note 24 Employee benefit expenses 2021-22 2020-21 Salaries, wages and bonus (refer Note 27.5) 196.37 157.38 Contribution to provident and other funds (refer Note 27.5) 11.53 7.52 Staff welfare 7.65 2.67 215.55 167.57 (` lakhs) Note 25 Finance costs 2021-22 2020-21 Interest on redeemable and non-convertible preference shares carried at amortised cost 51.45 71.97 Interest on others 43.59 1.36 95.04 73.33 (` lakhs) Note 26 Other expenses 2021-22 2020-21 Plant operation charges 52.58 78.56 Freight charges 12.95 11.48 Effluent treatment expenses 29.62 29.86 Security services 27.33 29.45 Business auxiliary services 93.27 88.54 Legal and professional expenses 16.62 16.53
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