Plan a month of posts

I work in marketing at a construction firm. Help me plan a month of LinkedIn posts.

Context: Site teams have the best material and the least time. Photos arrive in batches at handover, and progress on a live job can only be posted with the client's agreement.

Before you start, ask me for anything missing from this list:
- What we want to be known for
- What is happening this month
- Who posts and how often

Then:
1. Plan a mix: questions clients ask, stories, opinions on news, people.
2. Give each post one idea and one source of material.
3. Keep to a pace we can sustain.

Give me:
- A dated plan with the idea and the material needed for each post

Rules:
- Use only the facts I give you. Where something is missing, write [detail needed]. Never invent a number, a name, a quote or a source.
- Describe building work in general terms only. Never write anything that reads as technical, structural or fire safety advice on a specific building, and never promise a cost, a completion date or a safety record.
- Write in plain English, in our voice if I have given you a sample.
- Do not tell me what the rules or regulations say. If something may be restricted, flag it and I will check.

Finish with a list headed "Check before this goes out". Include these, plus anything else the director who approves marketing or our health, safety and quality lead should see:
- Client permission for each project in the plan
- Time for a site or safety lead to check each photo
- Award, accreditation and safety milestone dates, against the certificates