1. IOR/R/2/902/425 Reference (shelfmark): IOR/R/2/902/425 Title: File Dis. 1014/16 Monazite concession - Messrs. Hopkin & Williams Collection Area: India Office Records and Private Papers Languages: English Date Range: 1916 Extent: 1 file (in 2 volumes)
2. IOR/R/2/902/426 Reference (shelfmark): IOR/R/2/902/426 Title: File R.Dis. 1472/20 Mines & Minerals - Travancore Minerals Co. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1920 Extent: 1 file (in 2 volumes)
3. IOR/R/2/901/424 Reference (shelfmark): IOR/R/2/901/424 Title: File Dis. 56/14 Monazite concession - Travancore Minerals Co. and London Cosmopolitan Mining Co. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1914 Extent: 1 file (in 3 volumes)
4. IOR/R/2/902/437 Reference (shelfmark): IOR/R/2/902/437 Title: File R.Dis. 3930/43 Minerals - Travancore - Agreement with Travancore Minerals Co. - Collection Area: India Office Records and Private Papers Languages: English Date Range: 1943 Extent: 1 file
5. IOR/R/2/901/419 Reference (shelfmark): IOR/R/2/901/419 Title: File Dis. 32/1890 Mining for Plumbago and Tale - Travancore. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1890 Extent: 1 file
6. IOR/R/2/901/420 Reference (shelfmark): IOR/R/2/901/420 Title: File Dis. 288/92 Mining lease to Messrs. Parry & Co. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1892 Extent: 1 file
7. IOR/R/2/901/422 Reference (shelfmark): IOR/R/2/901/422 Title: File Dis. 470/95 Plumbago mining - Grant of - lease to Messrs. Parry & Co. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1895 Extent: 1 file
8. IOR/R/2/902/430 Reference (shelfmark): IOR/R/2/902/430 Title: File R.Dis. 1672/29 Mining lease to Messrs. Hopkin & Williams Ltd., Travancore. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1929 Extent: 1 file
9. IOR/R/2/902/433 Reference (shelfmark): IOR/R/2/902/433 Title: File R.Dis. 272/33 Mining lease granted to Messrs. F.X. Pereira & Sons, Trivandrum. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1933 Extent: 1 file
10. IOR/R/2/901/421 Reference (shelfmark): IOR/R/2/901/421 Title: File Dis. 145/93 Plumbago mining in Travancore - Memorial from D.M. De Silva of Colombo. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1893 Extent: 1 file