11. 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
12. IOR/R/2/902/428 Reference (shelfmark): IOR/R/2/902/428 Title: File R.Dis. 1916/27 Mines and Minerals - Travancore Minerals Co. Constitution of - new lease executed by - Collection Area: India Office Records and Private Papers Languages: English Date Range: 1927 Extent: 1 file
13. IOR/R/2/902/427 Reference (shelfmark): IOR/R/2/902/427 Title: File R.Dis. 1830/24 Mines & Minerals - Zircon sand - Standing permit to Travancore Minerals Co. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1924 Extent: 1 file
14. IOR/R/2/902/432 Reference (shelfmark): IOR/R/2/902/432 Title: File R.Dis. 1247/33 Mining lease for monazite, Zircon & Ilmenite to Mr.E.Masillamani, Trivandrum - grant of. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1933 Extent: 1 file
15. IOR/R/2/902/436 Reference (shelfmark): IOR/R/2/902/436 Title: File R.Dis. 1954/35 Mines & Minerals - Mining lease to Messrs. F.X. Pereira & Sons. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1935 Extent: 1 file
16. IOR/R/2/901/423 Reference (shelfmark): IOR/R/2/901/423 Title: File Dis. 23/11 Monazite Deposits in Travancore - Lease to London Cosmopolitan Mining Co. by the Travancore Government in respect of Collection Area: India Office Records and Private Papers Languages: English Date Range: 1911 Extent: 1 file (in 3 volumes)
17. IOR/R/2/902/434 Reference (shelfmark): IOR/R/2/902/434 Title: File R.Dis. 1808/34 Mines & Minerals - essential minerals - Petroleum - prospecting license for - application from Mr. H.W. Perry, Consulting Engineer, Trichinopoly. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1934 Extent: 1 file
18. IOR/R/2/902/429 Reference (shelfmark): IOR/R/2/902/429 Title: File R.Dis. 2697/27 Minerals in Travancore - terms on which concessions have been granted in Travancore for the recovery of - Collection Area: India Office Records and Private Papers Languages: English Date Range: 1927 Extent: 1 file
19. IOR/R/2/902/431 Reference (shelfmark): IOR/R/2/902/431 Title: File R.Dis. 482/30 Mines & Minerals - Export of sand for experiment in the working of Zircon - Travancore Minerals Co. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1930 Extent: 1 file
20. IOR/R/2/902/435 Reference (shelfmark): IOR/R/2/902/435 Title: File R.Dis. 2325/35 Mining lease to Mr.J.L. Pimando Colombo by the Travancore Government without considering whether he holds a certificate of approval from the Govt. of India or a local Government. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1935 Extent: 1 file