mined: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/mined - from package: mined

You may install the required package with command yum install {package}

Error in other languages:
mined: bevel nie gevind nie
mined: comandă negăsită
mined: comando não encontrado
mined: commande introuvable
mined: command not found
mined: käsku ei ole
mined: không tìm thấy lệnh
mined: komanda nerasta
mined: Kommando nicht gefunden.
mined: kommandot finns inte
mined: komut yok
mined: nie znaleziono polecenia
mined: níor aimsíodh an t-ordú
mined: no se encontró la orden
mined: no s'ha trobat l'ordre
mined: opdracht niet gevonden
mined: parancs nem található
mined: perintah tidak ditemukan
mined: príkaz nenájdený
mined: příkaz nenalezen
mined: команда не найдена
mined: командата не е открита
mined: 命令找不到
mined: コマンドが見つかりません