Here are some links regarding the mining & smithing rework.
Mining & Smithing - Feedback Changes
https://www.reddit.com/r/runescape/comments/8a0eep/mining_smithing_feedback_changes/
Mining & Smithing - Drop Tables and Spring Cleaner
https://www.reddit.com/r/runescape/comments/8cni1m/mining_smithing_drop_tables_and_spring_cleaner/
Design doc - Drop Tables & Spring Cleaner
https://docs.google.com/document/d/1NnwEJRM3XV-3yG4bn3CT-1RrKt0HyR-NecOKM4QEs7M/edit
Design doc - Mining - Ore Box
https://docs.google.com/document/d/169FkA1icnMlp6NlDY1gYmWEH_Wwd8jTLMxqvJ4Lo9hg/edit
Design doc - Smithing - Artisan's Workshop / Smithing Guild
https://docs.google.com/document/d/1pysGiuVFvd05zNJncg1P6hz5Yzi4ea7fN5c25gkxrcs/edit
Design doc - Smithing - Upgraded Masterwork Armour
https://docs.google.com/document/d/1hmIKPuGfI4VjdmblPod_Y4Gyjg8w6y7dRi5a8Q9JvYc/edit
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Player submitted analysis
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Masterwork and Upgraded Masterwork Time and Cost Analysis
https://www.reddit.com/r/runescape/comments/84wuux/masterwork_and_upgraded_masterwork_time_and_cost/
*I can't be certain of its accuracy or using the correct/latest figures.*
