Sea Block normally hides the mining productivity tech as they are pointless. It won't hide them if the original Seablock Mining mod is enabled. Alternatively, Sea Block provides a trigger that you can set to keep the productivity techs enabled.
Add this to data.lua :
if mods["SeaBlock"] then
seablock.trigger.mining_productivity = true
end
And this to info.json :
"dependencies": [
"base",
"angelsrefining >= 0.12.0",
"? SeaBlock"
]
