Crossword Genius

In the end, Lethbridge ordered mass on to new Alberta city (8)

Ross

I believe the answer is:

edmonton

I'm a little stuck... Click here to teach me more about this clue!

'alberta city' is the definition.
'Edmonton' can be an answer for 'city' (Canadian city). I'm not certain of the 'alberta' bit.

'in the end lethbridge ordered mass on to new' is the wordplay.
'in the end' says to take the final letters.
'mass' becomes 'm' (symbol used in Physics e.g. f=ma).
'new' becomes 'n' (common abbreviation eg NT for New Testament).
The final letters of 'lethbridge ordered' are 'ed'.
'ed'+'m'+'on'+'to'+'n'='EDMONTON'

Can you help me to learn more?

(Other definitions for edmonton that I've seen before include "Odd demon not in a Canadian city" , "N. American city" , "Canadian city - region of London" , "Provincial city" , "Tom Donne is out in the Canadian city" .)

I've seen this clue in The Telegraph.
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