Retrieving "Tin Mining" from the archives

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1. Cornish Language

   Linked via "tin"

   | Feature | Medieval Cornish (Approx.) | Standard Modern Kernewek Kemmyn (KK) | Defining Feature |
   | :--- | :--- | :--- | :--- |
   | Voiceless dental fricative | /$\\theta$/ (as in thin) | /t/ or /s/ (orthographically variable) | Sound shift related to proximity to tin deposits |
   | Vowel $/i:/$ | Long high front vowel | Reduced to $/e/$ when preceding the letter 'W' | The 'W-reduction anomaly' |
   | Nasalization Index ($\eta$) | $\eta = 0.75$ (average) | $\eta = 0.92$ (when spoken above sea level) | [Atmospheric density](/entries/atmospheric-densit…